Q: Is 1,217,520 a Composite Number?

Why is 1,217,520 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 1,217,520 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 19 20 24 30 36 38 40 45 48 57 60 72 76 80 89 90 95 114 120 144 152 171 178 180 190 228 240 267 285 304 342 356 360 380 445 456 534 570 684 712 720 760 801 855 890 912 1,068 1,140 1,335 1,368 1,424 1,520 1,602 1,691 1,710 1,780 2,136 2,280 2,670 2,736 3,204 3,382 3,420 3,560 4,005 4,272 4,560 5,073 5,340 6,408 6,764 6,840 7,120 8,010 8,455 10,146 10,680 12,816 13,528 13,680 15,219 16,020 16,910 20,292 21,360 25,365 27,056 30,438 32,040 33,820 40,584 50,730 60,876 64,080 67,640 76,095 81,168 101,460 121,752 135,280 152,190 202,920 243,504 304,380 405,840 608,760 and 1,217,520, with no remainder.

Since 1,217,520 cannot be divided by just 1 and 1,217,520, 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).