Q: Is 21,225,200 a Composite Number?

Why is 21,225,200 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 21,225,200 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 47 50 80 94 100 188 200 235 376 400 470 752 940 1,129 1,175 1,880 2,258 2,350 3,760 4,516 4,700 5,645 9,032 9,400 11,290 18,064 18,800 22,580 28,225 45,160 53,063 56,450 90,320 106,126 112,900 212,252 225,800 265,315 424,504 451,600 530,630 849,008 1,061,260 1,326,575 2,122,520 2,653,150 4,245,040 5,306,300 10,612,600 and 21,225,200, with no remainder.

Since 21,225,200 cannot be divided by just 1 and 21,225,200, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).