Q: Is 397,440 a Composite Number?

Why is 397,440 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 397,440 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 27 30 32 36 40 45 46 48 54 60 64 69 72 80 90 92 96 108 115 120 128 135 138 144 160 180 184 192 207 216 230 240 270 276 288 320 345 360 368 384 414 432 460 480 540 552 576 621 640 690 720 736 828 864 920 960 1,035 1,080 1,104 1,152 1,242 1,380 1,440 1,472 1,656 1,728 1,840 1,920 2,070 2,160 2,208 2,484 2,760 2,880 2,944 3,105 3,312 3,456 3,680 4,140 4,320 4,416 4,968 5,520 5,760 6,210 6,624 7,360 8,280 8,640 8,832 9,936 11,040 12,420 13,248 14,720 16,560 17,280 19,872 22,080 24,840 26,496 33,120 39,744 44,160 49,680 66,240 79,488 99,360 132,480 198,720 and 397,440, with no remainder.

Since 397,440 cannot be divided by just 1 and 397,440, 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).