Q: Is 19,431,540 a Composite Number?

Why is 19,431,540 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 19,431,540 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 30 36 41 45 60 82 90 123 164 180 205 246 369 410 492 615 738 820 1,230 1,476 1,845 2,460 2,633 3,690 5,266 7,380 7,899 10,532 13,165 15,798 23,697 26,330 31,596 39,495 47,394 52,660 78,990 94,788 107,953 118,485 157,980 215,906 236,970 323,859 431,812 473,940 539,765 647,718 971,577 1,079,530 1,295,436 1,619,295 1,943,154 2,159,060 3,238,590 3,886,308 4,857,885 6,477,180 9,715,770 and 19,431,540, with no remainder.

Since 19,431,540 cannot be divided by just 1 and 19,431,540, 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).