Q: Is 9,891,280 a Composite Number?

Why is 9,891,280 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 9,891,280 can be evenly divided by 1 2 4 5 7 8 10 14 16 17 20 28 34 35 40 56 68 70 80 85 112 119 136 140 170 238 272 280 340 476 560 595 680 952 1,039 1,190 1,360 1,904 2,078 2,380 4,156 4,760 5,195 7,273 8,312 9,520 10,390 14,546 16,624 17,663 20,780 29,092 35,326 36,365 41,560 58,184 70,652 72,730 83,120 88,315 116,368 123,641 141,304 145,460 176,630 247,282 282,608 290,920 353,260 494,564 581,840 618,205 706,520 989,128 1,236,410 1,413,040 1,978,256 2,472,820 4,945,640 and 9,891,280, with no remainder.

Since 9,891,280 cannot be divided by just 1 and 9,891,280, 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).