Q: Is 21,367,680 a Composite Number?

Why is 21,367,680 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 21,367,680 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 48 60 62 64 80 93 96 120 124 128 155 160 186 192 240 248 310 320 359 372 384 465 480 496 620 640 718 744 930 960 992 1,077 1,240 1,436 1,488 1,795 1,860 1,920 1,984 2,154 2,480 2,872 2,976 3,590 3,720 3,968 4,308 4,960 5,385 5,744 5,952 7,180 7,440 8,616 9,920 10,770 11,129 11,488 11,904 14,360 14,880 17,232 19,840 21,540 22,258 22,976 28,720 29,760 33,387 34,464 43,080 44,516 45,952 55,645 57,440 59,520 66,774 68,928 86,160 89,032 111,290 114,880 133,548 137,856 166,935 172,320 178,064 222,580 229,760 267,096 333,870 344,640 356,128 445,160 534,192 667,740 689,280 712,256 890,320 1,068,384 1,335,480 1,424,512 1,780,640 2,136,768 2,670,960 3,561,280 4,273,536 5,341,920 7,122,560 10,683,840 and 21,367,680, with no remainder.

Since 21,367,680 cannot be divided by just 1 and 21,367,680, 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).