number of continents
7 continents of the world. The widely recognized all the 7 continents are listed by size below, from biggest to smallest. Asia (43,820,000 sq km) includes 50 countries, and it is the most populated continent, the 60% of the total population of the Earth live here. Africa (30,370,000 sq km) comprises 54 countries. It is the hottest continent and home of the world's largest desert, the Sahara, occupying the 25% of the total area of Africa.