204

204 is an even natural number following 203 and preceding 205. Its prime factorization is 22 × 3 × 17.
==Properties==
*It is the ninth square pyramidal number.https://oeis.org/A000330
*It is also an abundant number, meaning that the sum of all its divisors are greater than twice the number itself.https://oeis.org/A005101
*204 is the fifth and the only three-digit triangular number.https://oeis.org/A001109
*It is a Mian-Chowla number.https://oeis.org/A005282
==Sources==