Q: Is 178,640 a Composite Number?

Why is 178,640 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 178,640 can be evenly divided by 1 2 4 5 7 8 10 11 14 16 20 22 28 29 35 40 44 55 56 58 70 77 80 88 110 112 116 140 145 154 176 203 220 232 280 290 308 319 385 406 440 464 560 580 616 638 770 812 880 1,015 1,160 1,232 1,276 1,540 1,595 1,624 2,030 2,233 2,320 2,552 3,080 3,190 3,248 4,060 4,466 5,104 6,160 6,380 8,120 8,932 11,165 12,760 16,240 17,864 22,330 25,520 35,728 44,660 89,320 and 178,640, with no remainder.

Since 178,640 cannot be divided by just 1 and 178,640, 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).