Q: Is 21,863,640 a Composite Number?

Why is 21,863,640 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 21,863,640 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 167 334 501 668 835 1,002 1,091 1,336 1,670 2,004 2,182 2,505 3,273 3,340 4,008 4,364 5,010 5,455 6,546 6,680 8,728 10,020 10,910 13,092 16,365 20,040 21,820 26,184 32,730 43,640 65,460 130,920 182,197 364,394 546,591 728,788 910,985 1,093,182 1,457,576 1,821,970 2,186,364 2,732,955 3,643,940 4,372,728 5,465,910 7,287,880 10,931,820 and 21,863,640, with no remainder.

Since 21,863,640 cannot be divided by just 1 and 21,863,640, 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).