Q: Is 20,415,564 a Composite Number?

Why is 20,415,564 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 20,415,564 can be evenly divided by 1 2 3 4 6 9 12 13 18 26 27 36 37 39 52 54 74 78 81 108 111 117 131 148 156 162 222 234 262 324 333 351 393 444 468 481 524 666 702 786 962 999 1,053 1,179 1,332 1,404 1,443 1,572 1,703 1,924 1,998 2,106 2,358 2,886 2,997 3,406 3,537 3,996 4,212 4,329 4,716 4,847 5,109 5,772 5,994 6,812 7,074 8,658 9,694 10,218 10,611 11,988 12,987 14,148 14,541 15,327 17,316 19,388 20,436 21,222 25,974 29,082 30,654 38,961 42,444 43,623 45,981 51,948 58,164 61,308 63,011 77,922 87,246 91,962 126,022 130,869 137,943 155,844 174,492 183,924 189,033 252,044 261,738 275,886 378,066 392,607 523,476 551,772 567,099 756,132 785,214 1,134,198 1,570,428 1,701,297 2,268,396 3,402,594 5,103,891 6,805,188 10,207,782 and 20,415,564, with no remainder.

Since 20,415,564 cannot be divided by just 1 and 20,415,564, 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).