Q: Is 1,531,320 a Composite Number?

Why is 1,531,320 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 1,531,320 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 84 105 120 140 168 210 280 420 840 1,823 3,646 5,469 7,292 9,115 10,938 12,761 14,584 18,230 21,876 25,522 27,345 36,460 38,283 43,752 51,044 54,690 63,805 72,920 76,566 102,088 109,380 127,610 153,132 191,415 218,760 255,220 306,264 382,830 510,440 765,660 and 1,531,320, with no remainder.

Since 1,531,320 cannot be divided by just 1 and 1,531,320, 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).