Q: Is 1,623,375 a Composite Number?

Why is 1,623,375 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 1,623,375 can be evenly divided by 1 3 5 9 13 15 25 27 37 39 45 65 75 111 117 125 135 185 195 225 325 333 351 375 481 555 585 675 925 975 999 1,125 1,443 1,625 1,665 1,755 2,405 2,775 2,925 3,375 4,329 4,625 4,875 4,995 7,215 8,325 8,775 12,025 12,987 13,875 14,625 21,645 24,975 36,075 41,625 43,875 60,125 64,935 108,225 124,875 180,375 324,675 541,125 and 1,623,375, with no remainder.

Since 1,623,375 cannot be divided by just 1 and 1,623,375, 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).