Q: Is 21,331,224 a Composite Number?

Why is 21,331,224 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 21,331,224 can be evenly divided by 1 2 3 4 6 8 9 12 18 19 24 31 36 38 57 62 72 76 93 114 124 152 171 186 228 248 279 342 372 456 503 558 589 684 744 1,006 1,116 1,178 1,368 1,509 1,767 2,012 2,232 2,356 3,018 3,534 4,024 4,527 4,712 5,301 6,036 7,068 9,054 9,557 10,602 12,072 14,136 15,593 18,108 19,114 21,204 28,671 31,186 36,216 38,228 42,408 46,779 57,342 62,372 76,456 86,013 93,558 114,684 124,744 140,337 172,026 187,116 229,368 280,674 296,267 344,052 374,232 561,348 592,534 688,104 888,801 1,122,696 1,185,068 1,777,602 2,370,136 2,666,403 3,555,204 5,332,806 7,110,408 10,665,612 and 21,331,224, with no remainder.

Since 21,331,224 cannot be divided by just 1 and 21,331,224, 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).