Q: Is 615,720 a Composite Number?

Why is 615,720 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 615,720 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 733 840 1,466 2,199 2,932 3,665 4,398 5,131 5,864 7,330 8,796 10,262 10,995 14,660 15,393 17,592 20,524 21,990 25,655 29,320 30,786 41,048 43,980 51,310 61,572 76,965 87,960 102,620 123,144 153,930 205,240 307,860 and 615,720, with no remainder.

Since 615,720 cannot be divided by just 1 and 615,720, 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).