Q: Is 21,473,168 a Composite Number?

Why is 21,473,168 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 21,473,168 can be evenly divided by 1 2 4 8 16 23 43 46 59 86 92 118 172 184 236 344 368 472 529 688 944 989 1,058 1,357 1,978 2,116 2,537 2,714 3,956 4,232 5,074 5,428 7,912 8,464 10,148 10,856 15,824 20,296 21,712 22,747 31,211 40,592 45,494 58,351 62,422 90,988 116,702 124,844 181,976 233,404 249,688 363,952 466,808 499,376 933,616 1,342,073 2,684,146 5,368,292 10,736,584 and 21,473,168, with no remainder.

Since 21,473,168 cannot be divided by just 1 and 21,473,168, 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).