Q: Is 21,340,320 a Composite Number?

Why is 21,340,320 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 21,340,320 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 40 46 48 60 69 80 92 96 115 120 138 160 184 230 240 276 345 368 460 480 552 690 736 920 1,104 1,380 1,840 1,933 2,208 2,760 3,680 3,866 5,520 5,799 7,732 9,665 11,040 11,598 15,464 19,330 23,196 28,995 30,928 38,660 44,459 46,392 57,990 61,856 77,320 88,918 92,784 115,980 133,377 154,640 177,836 185,568 222,295 231,960 266,754 309,280 355,672 444,590 463,920 533,508 666,885 711,344 889,180 927,840 1,067,016 1,333,770 1,422,688 1,778,360 2,134,032 2,667,540 3,556,720 4,268,064 5,335,080 7,113,440 10,670,160 and 21,340,320, with no remainder.

Since 21,340,320 cannot be divided by just 1 and 21,340,320, 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).