Q: Is 642,816 a Composite Number?

Why is 642,816 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 642,816 can be evenly divided by 1 2 3 4 6 8 9 12 16 18 24 27 31 32 36 48 54 62 64 72 81 93 96 108 124 128 144 162 186 192 216 248 256 279 288 324 372 384 432 496 558 576 648 744 768 837 864 992 1,116 1,152 1,296 1,488 1,674 1,728 1,984 2,232 2,304 2,511 2,592 2,976 3,348 3,456 3,968 4,464 5,022 5,184 5,952 6,696 6,912 7,936 8,928 10,044 10,368 11,904 13,392 17,856 20,088 20,736 23,808 26,784 35,712 40,176 53,568 71,424 80,352 107,136 160,704 214,272 321,408 and 642,816, with no remainder.

Since 642,816 cannot be divided by just 1 and 642,816, 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).