Q: Is 181,440 a Composite Number?

Why is 181,440 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 181,440 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 32 35 36 40 42 45 48 54 56 60 63 64 70 72 80 81 84 90 96 105 108 112 120 126 135 140 144 160 162 168 180 189 192 210 216 224 240 252 270 280 288 315 320 324 336 360 378 405 420 432 448 480 504 540 560 567 576 630 648 672 720 756 810 840 864 945 960 1,008 1,080 1,120 1,134 1,260 1,296 1,344 1,440 1,512 1,620 1,680 1,728 1,890 2,016 2,160 2,240 2,268 2,520 2,592 2,835 2,880 3,024 3,240 3,360 3,780 4,032 4,320 4,536 5,040 5,184 5,670 6,048 6,480 6,720 7,560 8,640 9,072 10,080 11,340 12,096 12,960 15,120 18,144 20,160 22,680 25,920 30,240 36,288 45,360 60,480 90,720 and 181,440, with no remainder.

Since 181,440 cannot be divided by just 1 and 181,440, 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).