Q: Is 1,521,840 a Composite Number?

Why is 1,521,840 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 1,521,840 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 34 40 48 51 60 68 80 85 102 120 136 170 204 240 255 272 340 373 408 510 680 746 816 1,020 1,119 1,360 1,492 1,865 2,040 2,238 2,984 3,730 4,080 4,476 5,595 5,968 6,341 7,460 8,952 11,190 12,682 14,920 17,904 19,023 22,380 25,364 29,840 31,705 38,046 44,760 50,728 63,410 76,092 89,520 95,115 101,456 126,820 152,184 190,230 253,640 304,368 380,460 507,280 760,920 and 1,521,840, with no remainder.

Since 1,521,840 cannot be divided by just 1 and 1,521,840, 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).