Q: Is 15,642,720 a Composite Number?

Why is 15,642,720 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 15,642,720 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 27 30 32 34 36 40 45 48 51 54 60 68 71 72 80 81 85 90 96 102 108 120 135 136 142 144 153 160 162 170 180 204 213 216 240 255 270 272 284 288 306 324 340 355 360 405 408 426 432 459 480 510 540 544 568 612 639 648 680 710 720 765 810 816 852 864 918 1,020 1,065 1,080 1,136 1,207 1,224 1,278 1,296 1,360 1,377 1,420 1,440 1,530 1,620 1,632 1,704 1,836 1,917 2,040 2,130 2,160 2,272 2,295 2,414 2,448 2,556 2,592 2,720 2,754 2,840 3,060 3,195 3,240 3,408 3,621 3,672 3,834 4,080 4,260 4,320 4,590 4,828 4,896 5,112 5,508 5,680 5,751 6,035 6,120 6,390 6,480 6,816 6,885 7,242 7,344 7,668 8,160 8,520 9,180 9,585 9,656 10,224 10,863 11,016 11,360 11,502 12,070 12,240 12,780 12,960 13,770 14,484 14,688 15,336 17,040 18,105 18,360 19,170 19,312 20,448 21,726 22,032 23,004 24,140 24,480 25,560 27,540 28,755 28,968 30,672 32,589 34,080 36,210 36,720 38,340 38,624 43,452 44,064 46,008 48,280 51,120 54,315 55,080 57,510 57,936 61,344 65,178 72,420 73,440 76,680 86,904 92,016 96,560 97,767 102,240 108,630 110,160 115,020 115,872 130,356 144,840 153,360 162,945 173,808 184,032 193,120 195,534 217,260 220,320 230,040 260,712 289,680 306,720 325,890 347,616 391,068 434,520 460,080 488,835 521,424 579,360 651,780 782,136 869,040 920,160 977,670 1,042,848 1,303,560 1,564,272 1,738,080 1,955,340 2,607,120 3,128,544 3,910,680 5,214,240 7,821,360 and 15,642,720, with no remainder.

Since 15,642,720 cannot be divided by just 1 and 15,642,720, 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).