Q: Is 21,765,816 a Composite Number?

Why is 21,765,816 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 21,765,816 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 36 72 503 601 1,006 1,202 1,509 1,803 2,012 2,404 3,018 3,606 4,024 4,527 4,808 5,409 6,036 7,212 9,054 10,818 12,072 14,424 18,108 21,636 36,216 43,272 302,303 604,606 906,909 1,209,212 1,813,818 2,418,424 2,720,727 3,627,636 5,441,454 7,255,272 10,882,908 and 21,765,816, with no remainder.

Since 21,765,816 cannot be divided by just 1 and 21,765,816, 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).