Q: Is 1,345,680 a Composite Number?

Why is 1,345,680 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 1,345,680 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 35 36 40 42 45 48 54 56 60 63 70 72 80 84 89 90 105 108 112 120 126 135 140 144 168 178 180 189 210 216 240 252 267 270 280 315 336 356 360 378 420 432 445 504 534 540 560 623 630 712 720 756 801 840 890 945 1,008 1,068 1,080 1,246 1,260 1,335 1,424 1,512 1,602 1,680 1,780 1,869 1,890 2,136 2,160 2,403 2,492 2,520 2,670 3,024 3,115 3,204 3,560 3,738 3,780 4,005 4,272 4,806 4,984 5,040 5,340 5,607 6,230 6,408 7,120 7,476 7,560 8,010 9,345 9,612 9,968 10,680 11,214 12,015 12,460 12,816 14,952 15,120 16,020 16,821 18,690 19,224 21,360 22,428 24,030 24,920 28,035 29,904 32,040 33,642 37,380 38,448 44,856 48,060 49,840 56,070 64,080 67,284 74,760 84,105 89,712 96,120 112,140 134,568 149,520 168,210 192,240 224,280 269,136 336,420 448,560 672,840 and 1,345,680, with no remainder.

Since 1,345,680 cannot be divided by just 1 and 1,345,680, 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).