# 10,000,000

10,000,000 (ten million) is the natural number following 9,999,999 and preceding 10,000,001.
In scientific notation, it is written as 10$^7$.
In South Asia except for Sri Lanka, it is known as the crore.
In Cyrillic numerals, it is known as the vran (вран — raven).

## Selected 8-digit numbers (10,000,001–99,999,999)
### 10,000,001 to 19,999,999

* 10,000,019 = smallest 8-digit prime number
* 10,001,628 = smallest triangular number with 8 digits and the 4,472nd triangular number
* 10,004,569 = 3163$^2$, the smallest 8-digit square
* 10,077,696 = 216$^3$ = 6$^9$, the smallest 8-digit cube
* 10,172,638 = number of reduced trees with 32 nodes
* 10,321,920 = double factorial of 16
* 10,556,001 = 3249$^2$ = 57$^4$
* 10,600,510 = number of signed trees with 14 nodes
* 10,609,137 = Leyland number using 6 & 9 (6$^9$ + 9$^6$)
* 10,976,184 = logarithmic number
* 11,111,111 = repunit
* 11,316,496 = 3364$^2$ = 58$^4$
* 11,390,625 = 3375$^2$ = 225$^3$ = 15$^6$
* 11,405,773 = Leonardo prime
* 11,436,171 = Keith number
* 11,485,154 = Markov number
* 11,881,376 = 26$^5$
* 11,943,936 = 3456$^2$
* 12,117,361 = 3481$^2$ = 59$^4$
* 12,252,240 = highly composite number, smallest number divisible by the numbers from 1 to 18
* 12,648,430 = hexadecimal C0FFEE, resembling the word "coffee"; used as a placeholder in computer programming, see hexspeak.
* 12,890,625 = 1-automorphic number
* 12,960,000 = 3600$^2$ = 60$^4$ = (3·4·5)$^4$, Plato's "nuptial number" (Republic VIII; see regular number)
* 12,988,816 = number of different ways of covering an 8-by-8 square with 32 1-by-2 dominoes
* 13,079,255 = number of free 16-ominoes
* 13,782,649 = Markov number
* 13,845,841 = 3721$^2$ = 61$^4$
* 14,348,907 = 243$^3$ = 27$^5$ = 3$^{15}$
* 14,352,282 = Leyland number = 3$^{15}$ + 15$^3$
* 14,549,535 = smallest number divisible by the first 10 odd numbers (1, 3, 5, 7, 9, 11, 13, 15, 17 and 19).
* 14,776,336 = 3844$^2$ = 62$^4$
* 14,828,074 = number of trees with 23 unlabeled nodes
* 14,930,352 = Fibonacci number
* 15,485,863 = 1,000,000th prime number
* 15,548,694 = Fine number
* 15,752,961 = 3969$^2$ = 63$^4$
* 15,994,428 = Pell number
* 16,003,008 = 252$^3$
* 16,609,837 = Markov number
* 16,733,779 = number of ways to partition {1,2,...,10} and then partition each cell (block) into sub-cells.
* 16,777,216 = 4096$^2$ = 256$^3$ = 64$^4$ = 16$^6$ = 8$^8$ = 4$^{12}$ = 2$^{24}$ — hexadecimal "million" (0x1000000), number of possible colors in 24/32-bit Truecolor computer graphics
* 16,777,792 = Leyland number = 2$^{24}$ + 24$^2$
* 16,797,952 = Leyland number = 4$^{12}$ + 12$^4$
* 16,964,653 = Markov number
* 17,016,602 = index of a prime Woodall number
* 17,210,368 = 28$^5$
* 17,334,801 = number of 31-bead necklaces (turning over is allowed) where complements are equivalent
* 17,650,828 = 1$^1$ + 2$^2$ + 3$^3$ + 4$^4$ + 5$^5$ + 6$^6$ + 7$^7$ + 8$^8$
* 17,820,000 = number of primitive polynomials of degree 30 over GF(2)
* 17,850,625 = 4225$^2$ = 65$^4$
* 17,896,832 = number of 30-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
* 18,199,284 = Motzkin number
* 18,407,808 = number of primitive polynomials of degree 29 over GF(2)
* 18,974,736 = 4356$^2$ = 66$^4$
* 19,487,171 = 11$^7$
* 19,680,277 = Wedderburn-Etherington number
* 19,987,816 = palindromic in 3 consecutive bases: 41AAA14$_{13}$, 2924292$_{14}$, 1B4C4B1$_{15}$

### 20,000,000 to 29,999,999

* 20,031,170 = Markov number
* 20,151,121 = 4489$^2$ = 67$^4$
* 20,511,149 = 29$^5$
* 20,543,579 = number of reduced trees with 33 nodes
* 20,797,002 = number of triangle-free graphs on 13 vertices
* 21,381,376 = 4624$^2$ = 68$^4$
* 21,531,778 = Markov number
* 21,621,600 = 13th colossally abundant number, 13th superior highly composite number
* 22,222,222 = repdigit
* 22,235,661 = 3$^3$×7$^7$
* 22,667,121 = 4761$^2$ = 69$^4$
* 24,010,000 = 4900$^2$ = 70$^4$
* 24,137,569 = 4913$^2$ = 289$^3$ = 17$^6$
* 24,157,817 = Fibonacci number, Markov number
* 24,300,000 = 30$^5$
* 24,678,050 = equal to the sum of the eighth powers of its digits
* 24,684,612 = 1$^8$ + 2$^8$ + 3$^8$ + 4$^8$ + 5$^8$ + 6$^8$ + 7$^8$ + 8$^8$
* 24,883,200 = superfactorial of 6
* 25,411,681 = 5041$^2$ = 71$^4$
* 26,873,856 = 5184$^2$ = 72$^4$
* 27,644,437 = Bell number
* 28,398,241 = 5329$^2$ = 73$^4$
* 28,629,151 = 31$^5$
* 29,986,576 = 5476$^2$ = 74$^4$

### 30,000,000 to 39,999,999

* 31,172,165 = smallest Proth exponent for n = 10223 (see Seventeen or Bust)
* 31,536,000 = standard number of seconds in a non-leap year (omitting leap seconds)
* 31,622,400 = standard number of seconds in a leap year (omitting leap seconds)
* 31,640,625 = 5625$^2$ = 75$^4$
* 33,333,333 = repdigit
* 33,362,176 = 5776$^2$ = 76$^4$
* 33,445,755 = Keith number
* 33,550,336 = fifth perfect number
* 33,554,432 = Leyland number using 8 & 8 (8$^8$ + 8$^8$); 32$^5$ = 2$^{25}$, number of directed graphs on 5 labeled nodes
* 33,555,057 = Leyland number using 2 & 25 (2$^{25}$ + 25$^2$)
* 33,588,234 = number of 32-bead necklaces (turning over is allowed) where complements are equivalent
* 34,459,425 = double factorial of 17
* 34,012,224 = 5832$^2$ = 324$^3$ = 18$^6$
* 34,636,834 = number of 31-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
* 35,153,041 = 5929$^2$ = 77$^4$
* 35,357,670 = $C(16)={\frac {\binom {2\times 16}{16}}{16+1}}={\frac {(2\times 16)!}{16!\times (16+1)!}}$
* 35,831,808 = 12$^7$ = 10,000,000$_{12}$ AKA a dozen-great-great-gross (10$_{12}$ great-great-grosses)
* 36,614,981 = alternating factorial
* 36,926,037 = 333$^3$
* 37,015,056 = 6084$^2$ = 78$^4$
* 37,210,000 = 6100$^2$
* 37,259,704 = 334$^3$
* 37,595,375 = 335$^3$
* 37,933,056 = 336$^3$
* 38,440,000 = 6200$^2$
* 38,613,965 = Pell number, Markov number
* 38,950,081 = 6241$^2$ = 79$^4$
* 39,088,169 = Fibonacci number
* 39,135,393 = 33$^5$
* 39,299,897 = number of trees with 24 unlabeled nodes
* 39,690,000 = 6300$^2$
* 39,905,269 = number of square (0,1)-matrices without zero rows and with exactly 8 entries equal to 1
* 39,916,800 = 11!
* 39,916,801 = factorial prime

### 40,000,000 to 49,999,999

* 40,353,607 = 343$^3$ = 7$^9$
* 40,960,000 = 6400$^2$ = 80$^4$
* 41,602,425 = number of reduced trees with 34 nodes
* 43,046,721 = 6561$^2$ = 81$^4$ = 9$^8$ = 3$^{16}$
* 43,050,817 = Leyland number using 3 & 16 (3$^{16}$ + 16$^3$)
* 43,112,609 = Mersenne prime exponent
* 43,443,858 = palindromic in 3 consecutive bases: 3C323C3$_{15}$, 296E692$_{16}$, 1DA2AD1$_{17}$
* 43,484,701 = Markov number
* 44,121,607 = Keith number
* 44,317,196 = smallest digitally balanced number in base 9
* 44,444,444 = repdigit
* 45,086,079 = number of prime numbers having nine digits
* 45,136,576 = Leyland number using 7 & 9 (7$^9$ + 9$^7$)
* 45,212,176 = 6724$^2$ = 82$^4$
* 45,435,424 = 34$^5$
* 46,026,618 = Wedderburn-Etherington number
* 46,656,000 = 360$^3$
* 46,749,427 = number of partially ordered set with 11 unlabeled elements
* 47,045,881 = 6859$^2$ = 361$^3$ = 19$^6$
* 47,176,870 = fifth busy beaver number
* 47,326,700 = first number of the first consecutive centuries each consisting wholly of composite numbers
* 47,326,800 = first number of the first century with the same prime pattern (in this case, no primes) as the previous century
* 47,458,321 = 6889$^2$ = 83$^4$
* 48,024,900 = square triangular number
* 48,266,466 = number of prime knots with 18 crossings
* 48,828,125 = 5$^{11}$
* 48,928,105 = Markov number
* 48,989,176 = Leyland number using 5 & 11 (5$^{11}$ + 11$^5$)
* 49,787,136 = 7056$^2$ = 84$^4$

### 50,000,000 to 59,999,999

* 50,107,909 = number of free 17-ominoes
* 50,235,931 = number of signed trees with 15 nodes
* 50,847,534 = the number of primes under 10$^9$
* 50,852,019 = Motzkin number
* 52,200,625 = 7225$^2$ = 85$^4$
* 52,521,875 = 35$^5$
* 54,700,816 = 7396$^2$ = 86$^4$
* 55,555,555 = repdigit
* 57,048,048 = Fine number
* 57,289,761 = 7569$^2$ = 87$^4$
* 57,885,161 = Mersenne prime exponent
* 59,969,536 = 7744$^2$ = 88$^4$

### 60,000,000 to 69,999,999

* 60,466,176 = 7776$^2$ = 36$^5$ = 6$^{10}$
* 61,466,176 = Leyland number using 6 & 10 (6$^{10}$ + 10$^6$)
* 62,742,241 = 7921$^2$ = 89$^4$
* 62,748,517 = 13$^7$
* 63,245,986 = Fibonacci number, Markov number
* 64,000,000 = 8000$^2$ = 400$^3$ = 20$^6$ — vigesimal "million" (1 alau in Mayan, 1 poaltzonxiquipilli in Nahuatl)
* 64,964,808 = 402$^3$
* 65,108,062 = number of 33-bead necklaces (turning over is allowed) where complements are equivalent
* 65,421,664 = negative multiplicative inverse of 40,014 modulo 2,147,483,563
* 65,610,000 = 8100$^2$ = 90$^4$
* 66,600,049 = Largest minimal prime in base 10
* 66,666,666 = repdigit
* 67,108,864 = 8192$^2$ = 4$^{13}$ = 2$^{26}$, number of primitive polynomials of degree 32 over GF(2)
* 67,109,540 = Leyland number using 2 & 26 (2$^{26}$ + 26$^2$)
* 67,110,932 = number of 32-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
* 67,137,425 = Leyland number using 4 & 13 (4$^{13}$ + 13$^4$)
* 68,041,019 = number of parallelogram polyominoes with 23 cells.
* 68,574,961 = 8281$^2$ = 91$^4$
* 69,273,666 = number of primitive polynomials of degree 31 over GF(2)
* 69,343,957 = 37$^5$

### 70,000,000 to 79,999,999

* 71,639,296 = 8464$^2$ = 92$^4$
* 72,546,283 = the smallest prime number preceded and followed by prime gaps of over 100
* 73,939,133 = the largest right-truncatable prime number in decimal
* 74,207,281 = Mersenne prime exponent
* 74,805,201 = 8649$^2$ = 93$^4$
* 77,232,917 = Mersenne prime exponent
* 77,777,777 = repdigit
* 78,074,896 = 8836$^2$ = 94$^4$
* 78,442,645 = Markov number
* 79,235,168 = 38$^5$

### 80,000,000 to 89,999,999

* 81,450,625 = 9025$^2$ = 95$^4$
* 82,589,933 = Mersenne prime exponent
* 84,440,886 = number of reduced trees with 35 nodes
* 84,934,656 = 9216$^2$ = 96$^4$
* 85,766,121 = 9261$^2$ = 441$^3$ = 21$^6$
* 86,400,000 = hyperfactorial of 5; 1$^1$ × 2$^2$ × 3$^3$ × 4$^4$ × 5$^5$
* 87,109,376 = 1-automorphic number
* 87,539,319 = taxicab number
* 88,529,281 = 9409$^2$ = 97$^4$
* 88,888,888 = repdigit
* 88,942,644 = 2$^2$×3$^3$×7$^7$

### 90,000,000 to 99,999,999

* 90,224,199 = 39$^5$
* 90,767,360 = Generalized Euler's number
* 92,236,816 = 9604$^2$ = 98$^4$
* 93,222,358 = Pell number
* 93,554,688 = 2-automorphic number
* 94,109,401 = square pentagonal number
* 94,418,953 = Markov prime
* 96,059,601 = 9801$^2$ = 99$^4$
* 99,897,344 = 464$^3$, the largest 8-digit cube
* 99,980,001 = 9999$^2$, the largest 8-digit square
* 99,990,001 = unique prime
* 99,991,011 = largest triangular number with 8 digits and the 14,141st triangular number
* 99,999,989 = greatest prime number with 8 digits
* 99,999,999 = repdigit, Friedman number, believed to be smallest number to be both repdigit and Friedman