Q: Is 20,559,440 a Composite Number?

Why is 20,559,440 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 20,559,440 can be evenly divided by 1 2 4 5 8 10 11 16 20 22 40 44 55 61 80 88 110 122 176 220 244 305 383 440 488 610 671 766 880 976 1,220 1,342 1,532 1,915 2,440 2,684 3,064 3,355 3,830 4,213 4,880 5,368 6,128 6,710 7,660 8,426 10,736 13,420 15,320 16,852 21,065 23,363 26,840 30,640 33,704 42,130 46,726 53,680 67,408 84,260 93,452 116,815 168,520 186,904 233,630 256,993 337,040 373,808 467,260 513,986 934,520 1,027,972 1,284,965 1,869,040 2,055,944 2,569,930 4,111,888 5,139,860 10,279,720 and 20,559,440, with no remainder.

Since 20,559,440 cannot be divided by just 1 and 20,559,440, 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).