Q: Is 1,816,620 a Composite Number?

Why is 1,816,620 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 1,816,620 can be evenly divided by 1 2 3 4 5 6 10 12 13 15 17 20 26 30 34 39 51 52 60 65 68 78 85 102 130 137 156 170 195 204 221 255 260 274 340 390 411 442 510 548 663 685 780 822 884 1,020 1,105 1,326 1,370 1,644 1,781 2,055 2,210 2,329 2,652 2,740 3,315 3,562 4,110 4,420 4,658 5,343 6,630 6,987 7,124 8,220 8,905 9,316 10,686 11,645 13,260 13,974 17,810 21,372 23,290 26,715 27,948 30,277 34,935 35,620 46,580 53,430 60,554 69,870 90,831 106,860 121,108 139,740 151,385 181,662 302,770 363,324 454,155 605,540 908,310 and 1,816,620, with no remainder.

Since 1,816,620 cannot be divided by just 1 and 1,816,620, 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).