Q: Is 21,702,564 a Composite Number?

Why is 21,702,564 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 21,702,564 can be evenly divided by 1 2 3 4 6 9 12 13 18 26 36 39 52 78 79 117 156 158 234 237 316 468 474 587 711 948 1,027 1,174 1,422 1,761 2,054 2,348 2,844 3,081 3,522 4,108 5,283 6,162 7,044 7,631 9,243 10,566 12,324 15,262 18,486 21,132 22,893 30,524 36,972 45,786 46,373 68,679 91,572 92,746 137,358 139,119 185,492 274,716 278,238 417,357 556,476 602,849 834,714 1,205,698 1,669,428 1,808,547 2,411,396 3,617,094 5,425,641 7,234,188 10,851,282 and 21,702,564, with no remainder.

Since 21,702,564 cannot be divided by just 1 and 21,702,564, 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).