Q: Is 1,681,440 a Composite Number?

Why is 1,681,440 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 1,681,440 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 48 60 62 80 93 96 113 120 124 155 160 186 226 240 248 310 339 372 452 465 480 496 565 620 678 744 904 930 992 1,130 1,240 1,356 1,488 1,695 1,808 1,860 2,260 2,480 2,712 2,976 3,390 3,503 3,616 3,720 4,520 4,960 5,424 6,780 7,006 7,440 9,040 10,509 10,848 13,560 14,012 14,880 17,515 18,080 21,018 27,120 28,024 35,030 42,036 52,545 54,240 56,048 70,060 84,072 105,090 112,096 140,120 168,144 210,180 280,240 336,288 420,360 560,480 840,720 and 1,681,440, with no remainder.

Since 1,681,440 cannot be divided by just 1 and 1,681,440, 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).