Q: Is 21,533,040 a Composite Number?

Why is 21,533,040 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 21,533,040 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 81 90 108 120 135 144 162 180 216 240 270 324 360 405 432 540 648 720 810 1,080 1,296 1,620 2,160 3,240 3,323 6,480 6,646 9,969 13,292 16,615 19,938 26,584 29,907 33,230 39,876 49,845 53,168 59,814 66,460 79,752 89,721 99,690 119,628 132,920 149,535 159,504 179,442 199,380 239,256 265,840 269,163 299,070 358,884 398,760 448,605 478,512 538,326 598,140 717,768 797,520 897,210 1,076,652 1,196,280 1,345,815 1,435,536 1,794,420 2,153,304 2,392,560 2,691,630 3,588,840 4,306,608 5,383,260 7,177,680 10,766,520 and 21,533,040, with no remainder.

Since 21,533,040 cannot be divided by just 1 and 21,533,040, 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).