Q: Is 18,940,040 a Composite Number?

Why is 18,940,040 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 18,940,040 can be evenly divided by 1 2 4 5 7 8 10 14 17 20 23 28 34 35 40 46 56 68 70 85 92 115 119 136 140 161 170 173 184 230 238 280 322 340 346 391 460 476 595 644 680 692 782 805 865 920 952 1,190 1,211 1,288 1,384 1,564 1,610 1,730 1,955 2,380 2,422 2,737 2,941 3,128 3,220 3,460 3,910 3,979 4,760 4,844 5,474 5,882 6,055 6,440 6,920 7,820 7,958 9,688 10,948 11,764 12,110 13,685 14,705 15,640 15,916 19,895 20,587 21,896 23,528 24,220 27,370 27,853 29,410 31,832 39,790 41,174 48,440 54,740 55,706 58,820 67,643 79,580 82,348 102,935 109,480 111,412 117,640 135,286 139,265 159,160 164,696 205,870 222,824 270,572 278,530 338,215 411,740 473,501 541,144 557,060 676,430 823,480 947,002 1,114,120 1,352,860 1,894,004 2,367,505 2,705,720 3,788,008 4,735,010 9,470,020 and 18,940,040, with no remainder.

Since 18,940,040 cannot be divided by just 1 and 18,940,040, 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).