Q: Is 21,308,448 a Composite Number?

Why is 21,308,448 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 21,308,448 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 32 37 42 48 56 74 84 96 111 112 148 168 222 224 259 296 336 444 518 592 672 777 857 888 1,036 1,184 1,554 1,714 1,776 2,072 2,571 3,108 3,428 3,552 4,144 5,142 5,999 6,216 6,856 8,288 10,284 11,998 12,432 13,712 17,997 20,568 23,996 24,864 27,424 31,709 35,994 41,136 47,992 63,418 71,988 82,272 95,127 95,984 126,836 143,976 190,254 191,968 221,963 253,672 287,952 380,508 443,926 507,344 575,904 665,889 761,016 887,852 1,014,688 1,331,778 1,522,032 1,775,704 2,663,556 3,044,064 3,551,408 5,327,112 7,102,816 10,654,224 and 21,308,448, with no remainder.

Since 21,308,448 cannot be divided by just 1 and 21,308,448, 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).