Q: Is 639,072 a Composite Number?

Why is 639,072 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 639,072 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 56 63 72 84 96 112 126 144 168 224 252 288 317 336 504 634 672 951 1,008 1,268 1,902 2,016 2,219 2,536 2,853 3,804 4,438 5,072 5,706 6,657 7,608 8,876 10,144 11,412 13,314 15,216 17,752 19,971 22,824 26,628 30,432 35,504 39,942 45,648 53,256 71,008 79,884 91,296 106,512 159,768 213,024 319,536 and 639,072, with no remainder.

Since 639,072 cannot be divided by just 1 and 639,072, 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).