Q: Is 21,768,160 a Composite Number?

Why is 21,768,160 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 21,768,160 can be evenly divided by 1 2 4 5 8 10 16 17 20 32 34 40 53 68 80 85 106 136 151 160 170 212 265 272 302 340 424 530 544 604 680 755 848 901 1,060 1,208 1,360 1,510 1,696 1,802 2,120 2,416 2,567 2,720 3,020 3,604 4,240 4,505 4,832 5,134 6,040 7,208 8,003 8,480 9,010 10,268 12,080 12,835 14,416 16,006 18,020 20,536 24,160 25,670 28,832 32,012 36,040 40,015 41,072 51,340 64,024 72,080 80,030 82,144 102,680 128,048 136,051 144,160 160,060 205,360 256,096 272,102 320,120 410,720 544,204 640,240 680,255 1,088,408 1,280,480 1,360,510 2,176,816 2,721,020 4,353,632 5,442,040 10,884,080 and 21,768,160, with no remainder.

Since 21,768,160 cannot be divided by just 1 and 21,768,160, 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).