Q: Is 12,578,720 a Composite Number?

Why is 12,578,720 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 12,578,720 can be evenly divided by 1 2 4 5 7 8 10 11 14 16 20 22 28 32 35 40 44 55 56 70 77 80 88 110 112 140 154 160 176 220 224 280 308 352 385 440 560 616 770 880 1,021 1,120 1,232 1,540 1,760 2,042 2,464 3,080 4,084 5,105 6,160 7,147 8,168 10,210 11,231 12,320 14,294 16,336 20,420 22,462 28,588 32,672 35,735 40,840 44,924 56,155 57,176 71,470 78,617 81,680 89,848 112,310 114,352 142,940 157,234 163,360 179,696 224,620 228,704 285,880 314,468 359,392 393,085 449,240 571,760 628,936 786,170 898,480 1,143,520 1,257,872 1,572,340 1,796,960 2,515,744 3,144,680 6,289,360 and 12,578,720, with no remainder.

Since 12,578,720 cannot be divided by just 1 and 12,578,720, 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).