Q: Is 1,378,240 a Composite Number?

Why is 1,378,240 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 1,378,240 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 59 64 73 80 118 146 160 236 292 295 320 365 472 584 590 730 944 1,168 1,180 1,460 1,888 2,336 2,360 2,920 3,776 4,307 4,672 4,720 5,840 8,614 9,440 11,680 17,228 18,880 21,535 23,360 34,456 43,070 68,912 86,140 137,824 172,280 275,648 344,560 689,120 and 1,378,240, with no remainder.

Since 1,378,240 cannot be divided by just 1 and 1,378,240, 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).