Q: Is 12,345,440 a Composite Number?

Why is 12,345,440 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 12,345,440 can be evenly divided by 1 2 4 5 8 10 16 19 20 31 32 38 40 62 76 80 95 124 131 152 155 160 190 248 262 304 310 380 496 524 589 608 620 655 760 992 1,048 1,178 1,240 1,310 1,520 2,096 2,356 2,480 2,489 2,620 2,945 3,040 4,061 4,192 4,712 4,960 4,978 5,240 5,890 8,122 9,424 9,956 10,480 11,780 12,445 16,244 18,848 19,912 20,305 20,960 23,560 24,890 32,488 39,824 40,610 47,120 49,780 64,976 77,159 79,648 81,220 94,240 99,560 129,952 154,318 162,440 199,120 308,636 324,880 385,795 398,240 617,272 649,760 771,590 1,234,544 1,543,180 2,469,088 3,086,360 6,172,720 and 12,345,440, with no remainder.

Since 12,345,440 cannot be divided by just 1 and 12,345,440, 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).