Q: Is 21,612,880 a Composite Number?

Why is 21,612,880 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 21,612,880 can be evenly divided by 1 2 4 5 8 10 16 19 20 38 40 59 76 80 95 118 152 190 236 241 295 304 380 472 482 590 760 944 964 1,121 1,180 1,205 1,520 1,928 2,242 2,360 2,410 3,856 4,484 4,579 4,720 4,820 5,605 8,968 9,158 9,640 11,210 14,219 17,936 18,316 19,280 22,420 22,895 28,438 36,632 44,840 45,790 56,876 71,095 73,264 89,680 91,580 113,752 142,190 183,160 227,504 270,161 284,380 366,320 540,322 568,760 1,080,644 1,137,520 1,350,805 2,161,288 2,701,610 4,322,576 5,403,220 10,806,440 and 21,612,880, with no remainder.

Since 21,612,880 cannot be divided by just 1 and 21,612,880, 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).