Q: Is 21,471,516 a Composite Number?

Why is 21,471,516 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 21,471,516 can be evenly divided by 1 2 3 4 6 9 11 12 18 22 33 36 44 59 66 99 118 132 177 198 236 354 396 531 649 708 919 1,062 1,298 1,838 1,947 2,124 2,596 2,757 3,676 3,894 5,514 5,841 7,788 8,271 10,109 11,028 11,682 16,542 20,218 23,364 30,327 33,084 40,436 54,221 60,654 90,981 108,442 121,308 162,663 181,962 216,884 325,326 363,924 487,989 596,431 650,652 975,978 1,192,862 1,789,293 1,951,956 2,385,724 3,578,586 5,367,879 7,157,172 10,735,758 and 21,471,516, with no remainder.

Since 21,471,516 cannot be divided by just 1 and 21,471,516, 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).