Q: Is 1,821,690 a Composite Number?

Why is 1,821,690 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 1,821,690 can be evenly divided by 1 2 3 5 6 9 10 13 15 18 26 27 30 39 45 54 65 78 81 90 117 130 135 162 173 195 234 270 346 351 390 405 519 585 702 810 865 1,038 1,053 1,170 1,557 1,730 1,755 2,106 2,249 2,595 3,114 3,510 4,498 4,671 5,190 5,265 6,747 7,785 9,342 10,530 11,245 13,494 14,013 15,570 20,241 22,490 23,355 28,026 33,735 40,482 46,710 60,723 67,470 70,065 101,205 121,446 140,130 182,169 202,410 303,615 364,338 607,230 910,845 and 1,821,690, with no remainder.

Since 1,821,690 cannot be divided by just 1 and 1,821,690, 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).