Q: Is 1,781,880 a Composite Number?

Why is 1,781,880 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 1,781,880 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 31 40 60 62 93 120 124 155 186 248 310 372 465 479 620 744 930 958 1,240 1,437 1,860 1,916 2,395 2,874 3,720 3,832 4,790 5,748 7,185 9,580 11,496 14,370 14,849 19,160 28,740 29,698 44,547 57,480 59,396 74,245 89,094 118,792 148,490 178,188 222,735 296,980 356,376 445,470 593,960 890,940 and 1,781,880, with no remainder.

Since 1,781,880 cannot be divided by just 1 and 1,781,880, 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).