Q: Is 28,199,745 a Composite Number?

Why is 28,199,745 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 28,199,745 can be evenly divided by 1 3 5 7 9 15 21 27 29 35 45 49 63 81 87 105 135 145 147 189 203 245 261 315 343 405 435 441 567 609 735 783 945 1,015 1,029 1,305 1,323 1,421 1,715 1,827 2,205 2,349 2,401 2,835 3,045 3,087 3,915 3,969 4,263 5,145 5,481 6,615 7,105 7,203 9,135 9,261 9,947 11,745 12,005 12,789 15,435 16,443 19,845 21,315 21,609 27,405 27,783 29,841 36,015 38,367 46,305 49,735 63,945 64,827 69,629 82,215 89,523 108,045 115,101 138,915 149,205 191,835 194,481 208,887 268,569 324,135 348,145 447,615 575,505 626,661 805,707 972,405 1,044,435 1,342,845 1,879,983 3,133,305 4,028,535 5,639,949 9,399,915 and 28,199,745, with no remainder.

Since 28,199,745 cannot be divided by just 1 and 28,199,745, 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).