Q: Is 1,787,720 a Composite Number?

Why is 1,787,720 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 1,787,720 can be evenly divided by 1 2 4 5 8 10 11 17 20 22 34 40 44 55 68 85 88 110 136 170 187 220 239 340 374 440 478 680 748 935 956 1,195 1,496 1,870 1,912 2,390 2,629 3,740 4,063 4,780 5,258 7,480 8,126 9,560 10,516 13,145 16,252 20,315 21,032 26,290 32,504 40,630 44,693 52,580 81,260 89,386 105,160 162,520 178,772 223,465 357,544 446,930 893,860 and 1,787,720, with no remainder.

Since 1,787,720 cannot be divided by just 1 and 1,787,720, 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).