Q: Is 21,413,880 a Composite Number?

Why is 21,413,880 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 21,413,880 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 17 18 20 24 30 34 36 40 45 51 60 68 72 85 90 102 120 136 153 170 180 204 255 306 340 360 408 510 612 680 765 1,020 1,224 1,530 2,040 3,060 3,499 6,120 6,998 10,497 13,996 17,495 20,994 27,992 31,491 34,990 41,988 52,485 59,483 62,982 69,980 83,976 104,970 118,966 125,964 139,960 157,455 178,449 209,940 237,932 251,928 297,415 314,910 356,898 419,880 475,864 535,347 594,830 629,820 713,796 892,245 1,070,694 1,189,660 1,259,640 1,427,592 1,784,490 2,141,388 2,379,320 2,676,735 3,568,980 4,282,776 5,353,470 7,137,960 10,706,940 and 21,413,880, with no remainder.

Since 21,413,880 cannot be divided by just 1 and 21,413,880, 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).