Q: Is 1,605,366 a Composite Number?

Why is 1,605,366 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 1,605,366 can be evenly divided by 1 2 3 6 7 9 14 18 21 27 31 42 54 62 63 93 126 137 186 189 217 274 279 378 411 434 558 651 822 837 959 1,233 1,302 1,674 1,918 1,953 2,466 2,877 3,699 3,906 4,247 5,754 5,859 7,398 8,494 8,631 11,718 12,741 17,262 25,482 25,893 29,729 38,223 51,786 59,458 76,446 89,187 114,669 178,374 229,338 267,561 535,122 802,683 and 1,605,366, with no remainder.

Since 1,605,366 cannot be divided by just 1 and 1,605,366, 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).