Q: Is 217,440 a Composite Number?

Why is 217,440 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 217,440 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 90 96 120 144 151 160 180 240 288 302 360 453 480 604 720 755 906 1,208 1,359 1,440 1,510 1,812 2,265 2,416 2,718 3,020 3,624 4,530 4,832 5,436 6,040 6,795 7,248 9,060 10,872 12,080 13,590 14,496 18,120 21,744 24,160 27,180 36,240 43,488 54,360 72,480 108,720 and 217,440, with no remainder.

Since 217,440 cannot be divided by just 1 and 217,440, 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).