Q: Is 17,780,840 a Composite Number?

Why is 17,780,840 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 17,780,840 can be evenly divided by 1 2 4 5 7 8 10 11 14 20 22 23 28 35 40 44 46 55 56 70 77 88 92 110 115 140 154 161 184 220 230 251 253 280 308 322 385 440 460 502 506 616 644 770 805 920 1,004 1,012 1,255 1,265 1,288 1,540 1,610 1,757 1,771 2,008 2,024 2,510 2,530 2,761 3,080 3,220 3,514 3,542 5,020 5,060 5,522 5,773 6,440 7,028 7,084 8,785 8,855 10,040 10,120 11,044 11,546 13,805 14,056 14,168 17,570 17,710 19,327 22,088 23,092 27,610 28,865 35,140 35,420 38,654 40,411 46,184 55,220 57,730 63,503 70,280 70,840 77,308 80,822 96,635 110,440 115,460 127,006 154,616 161,644 193,270 202,055 230,920 254,012 317,515 323,288 386,540 404,110 444,521 508,024 635,030 773,080 808,220 889,042 1,270,060 1,616,440 1,778,084 2,222,605 2,540,120 3,556,168 4,445,210 8,890,420 and 17,780,840, with no remainder.

Since 17,780,840 cannot be divided by just 1 and 17,780,840, 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).