Q: Is 21,537,670 a Composite Number?

Why is 21,537,670 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 21,537,670 can be evenly divided by 1 2 5 7 10 11 14 22 35 55 70 77 83 110 154 166 337 385 415 581 674 770 830 913 1,162 1,685 1,826 2,359 2,905 3,370 3,707 4,565 4,718 5,810 6,391 7,414 9,130 11,795 12,782 18,535 23,590 25,949 27,971 31,955 37,070 51,898 55,942 63,910 129,745 139,855 195,797 259,490 279,710 307,681 391,594 615,362 978,985 1,538,405 1,957,970 2,153,767 3,076,810 4,307,534 10,768,835 and 21,537,670, with no remainder.

Since 21,537,670 cannot be divided by just 1 and 21,537,670, 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).