Q: Is 638,928 a Composite Number?

Why is 638,928 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 638,928 can be evenly divided by 1 2 3 4 6 8 9 12 16 17 18 24 27 29 34 36 48 51 54 58 68 72 81 87 102 108 116 136 144 153 162 174 204 216 232 261 272 306 324 348 408 432 459 464 493 522 612 648 696 783 816 918 986 1,044 1,224 1,296 1,377 1,392 1,479 1,566 1,836 1,972 2,088 2,349 2,448 2,754 2,958 3,132 3,672 3,944 4,176 4,437 4,698 5,508 5,916 6,264 7,344 7,888 8,874 9,396 11,016 11,832 12,528 13,311 17,748 18,792 22,032 23,664 26,622 35,496 37,584 39,933 53,244 70,992 79,866 106,488 159,732 212,976 319,464 and 638,928, with no remainder.

Since 638,928 cannot be divided by just 1 and 638,928, 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).