Q: Is 21,618,036 a Composite Number?

Why is 21,618,036 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 21,618,036 can be evenly divided by 1 2 3 4 6 9 11 12 18 22 27 31 33 36 44 54 62 66 93 99 108 124 132 186 198 279 297 341 372 396 558 587 594 682 837 1,023 1,116 1,174 1,188 1,364 1,674 1,761 2,046 2,348 3,069 3,348 3,522 4,092 5,283 6,138 6,457 7,044 9,207 10,566 12,276 12,914 15,849 18,197 18,414 19,371 21,132 25,828 31,698 36,394 36,828 38,742 54,591 58,113 63,396 72,788 77,484 109,182 116,226 163,773 174,339 200,167 218,364 232,452 327,546 348,678 400,334 491,319 600,501 655,092 697,356 800,668 982,638 1,201,002 1,801,503 1,965,276 2,402,004 3,603,006 5,404,509 7,206,012 10,809,018 and 21,618,036, with no remainder.

Since 21,618,036 cannot be divided by just 1 and 21,618,036, 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).