Q: Is 398,580 a Composite Number?

Why is 398,580 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 398,580 can be evenly divided by 1 2 3 4 5 6 7 10 12 13 14 15 20 21 26 28 30 35 39 42 52 60 65 70 73 78 84 91 105 130 140 146 156 182 195 210 219 260 273 292 364 365 390 420 438 455 511 546 730 780 876 910 949 1,022 1,092 1,095 1,365 1,460 1,533 1,820 1,898 2,044 2,190 2,555 2,730 2,847 3,066 3,796 4,380 4,745 5,110 5,460 5,694 6,132 6,643 7,665 9,490 10,220 11,388 13,286 14,235 15,330 18,980 19,929 26,572 28,470 30,660 33,215 39,858 56,940 66,430 79,716 99,645 132,860 199,290 and 398,580, with no remainder.

Since 398,580 cannot be divided by just 1 and 398,580, 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).