Q: Is 19,178,880 a Composite Number?

Why is 19,178,880 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 19,178,880 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 64 70 80 84 96 105 112 120 128 140 160 168 192 210 224 240 280 320 336 384 420 448 480 560 640 672 840 896 960 1,120 1,344 1,427 1,680 1,920 2,240 2,688 2,854 3,360 4,281 4,480 5,708 6,720 7,135 8,562 9,989 11,416 13,440 14,270 17,124 19,978 21,405 22,832 28,540 29,967 34,248 39,956 42,810 45,664 49,945 57,080 59,934 68,496 79,912 85,620 91,328 99,890 114,160 119,868 136,992 149,835 159,824 171,240 182,656 199,780 228,320 239,736 273,984 299,670 319,648 342,480 399,560 456,640 479,472 547,968 599,340 639,296 684,960 799,120 913,280 958,944 1,198,680 1,278,592 1,369,920 1,598,240 1,917,888 2,397,360 2,739,840 3,196,480 3,835,776 4,794,720 6,392,960 9,589,440 and 19,178,880, with no remainder.

Since 19,178,880 cannot be divided by just 1 and 19,178,880, 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).