Q: Is 21,625,428 a Composite Number?

Why is 21,625,428 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 21,625,428 can be evenly divided by 1 2 3 4 6 11 12 17 22 23 33 34 44 46 51 66 68 69 92 102 132 138 187 204 253 276 374 391 419 506 561 748 759 782 838 1,012 1,122 1,173 1,257 1,518 1,564 1,676 2,244 2,346 2,514 3,036 4,301 4,609 4,692 5,028 7,123 8,602 9,218 9,637 12,903 13,827 14,246 17,204 18,436 19,274 21,369 25,806 27,654 28,492 28,911 38,548 42,738 51,612 55,308 57,822 78,353 85,476 106,007 115,644 156,706 163,829 212,014 235,059 313,412 318,021 327,658 424,028 470,118 491,487 636,042 655,316 940,236 982,974 1,272,084 1,802,119 1,965,948 3,604,238 5,406,357 7,208,476 10,812,714 and 21,625,428, with no remainder.

Since 21,625,428 cannot be divided by just 1 and 21,625,428, 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).