Q: Is 27,720 a Composite Number?

Why is 27,720 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 27,720 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 11 12 14 15 18 20 21 22 24 28 30 33 35 36 40 42 44 45 55 56 60 63 66 70 72 77 84 88 90 99 105 110 120 126 132 140 154 165 168 180 198 210 220 231 252 264 280 308 315 330 360 385 396 420 440 462 495 504 616 630 660 693 770 792 840 924 990 1,155 1,260 1,320 1,386 1,540 1,848 1,980 2,310 2,520 2,772 3,080 3,465 3,960 4,620 5,544 6,930 9,240 13,860 and 27,720, with no remainder.

Since 27,720 cannot be divided by just 1 and 27,720, 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).