Q: Is 1,721,280 a Composite Number?

Why is 1,721,280 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 1,721,280 can be evenly divided by 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 64 66 80 88 96 110 120 132 160 163 165 176 192 220 240 264 320 326 330 352 440 480 489 528 652 660 704 815 880 960 978 1,056 1,304 1,320 1,630 1,760 1,793 1,956 2,112 2,445 2,608 2,640 3,260 3,520 3,586 3,912 4,890 5,216 5,280 5,379 6,520 7,172 7,824 8,965 9,780 10,432 10,560 10,758 13,040 14,344 15,648 17,930 19,560 21,516 26,080 26,895 28,688 31,296 35,860 39,120 43,032 52,160 53,790 57,376 71,720 78,240 86,064 107,580 114,752 143,440 156,480 172,128 215,160 286,880 344,256 430,320 573,760 860,640 and 1,721,280, with no remainder.

Since 1,721,280 cannot be divided by just 1 and 1,721,280, 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).