Q: Is 18,331,280 a Composite Number?

Why is 18,331,280 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 18,331,280 can be evenly divided by 1 2 4 5 8 10 11 16 20 22 37 40 44 55 74 80 88 110 148 176 185 220 296 370 407 440 563 592 740 814 880 1,126 1,480 1,628 2,035 2,252 2,815 2,960 3,256 4,070 4,504 5,630 6,193 6,512 8,140 9,008 11,260 12,386 16,280 20,831 22,520 24,772 30,965 32,560 41,662 45,040 49,544 61,930 83,324 99,088 104,155 123,860 166,648 208,310 229,141 247,720 333,296 416,620 458,282 495,440 833,240 916,564 1,145,705 1,666,480 1,833,128 2,291,410 3,666,256 4,582,820 9,165,640 and 18,331,280, with no remainder.

Since 18,331,280 cannot be divided by just 1 and 18,331,280, 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).