Q: Is 21,522,540 a Composite Number?

Why is 21,522,540 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 21,522,540 can be evenly divided by 1 2 3 4 5 6 10 12 13 15 20 26 30 39 41 52 60 65 78 82 123 130 156 164 195 205 246 260 390 410 492 533 615 673 780 820 1,066 1,230 1,346 1,599 2,019 2,132 2,460 2,665 2,692 3,198 3,365 4,038 5,330 6,396 6,730 7,995 8,076 8,749 10,095 10,660 13,460 15,990 17,498 20,190 26,247 27,593 31,980 34,996 40,380 43,745 52,494 55,186 82,779 87,490 104,988 110,372 131,235 137,965 165,558 174,980 262,470 275,930 331,116 358,709 413,895 524,940 551,860 717,418 827,790 1,076,127 1,434,836 1,655,580 1,793,545 2,152,254 3,587,090 4,304,508 5,380,635 7,174,180 10,761,270 and 21,522,540, with no remainder.

Since 21,522,540 cannot be divided by just 1 and 21,522,540, 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).