Q: Is 21,402,216 a Composite Number?

Why is 21,402,216 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 21,402,216 can be evenly divided by 1 2 3 4 6 8 9 11 12 18 22 24 33 36 44 61 66 72 88 99 122 132 183 198 244 264 366 396 443 488 549 671 732 792 886 1,098 1,329 1,342 1,464 1,772 2,013 2,196 2,658 2,684 3,544 3,987 4,026 4,392 4,873 5,316 5,368 6,039 7,974 8,052 9,746 10,632 12,078 14,619 15,948 16,104 19,492 24,156 27,023 29,238 31,896 38,984 43,857 48,312 54,046 58,476 81,069 87,714 108,092 116,952 162,138 175,428 216,184 243,207 297,253 324,276 350,856 486,414 594,506 648,552 891,759 972,828 1,189,012 1,783,518 1,945,656 2,378,024 2,675,277 3,567,036 5,350,554 7,134,072 10,701,108 and 21,402,216, with no remainder.

Since 21,402,216 cannot be divided by just 1 and 21,402,216, 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).