Q: Is 19,725,720 a Composite Number?

Why is 19,725,720 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 19,725,720 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 20 21 23 24 28 30 35 40 42 46 56 60 69 70 84 92 105 115 120 138 140 161 168 184 210 230 276 280 322 345 420 460 483 552 644 690 805 840 920 966 1,021 1,288 1,380 1,610 1,932 2,042 2,415 2,760 3,063 3,220 3,864 4,084 4,830 5,105 6,126 6,440 7,147 8,168 9,660 10,210 12,252 14,294 15,315 19,320 20,420 21,441 23,483 24,504 28,588 30,630 35,735 40,840 42,882 46,966 57,176 61,260 70,449 71,470 85,764 93,932 107,205 117,415 122,520 140,898 142,940 164,381 171,528 187,864 214,410 234,830 281,796 285,880 328,762 352,245 428,820 469,660 493,143 563,592 657,524 704,490 821,905 857,640 939,320 986,286 1,315,048 1,408,980 1,643,810 1,972,572 2,465,715 2,817,960 3,287,620 3,945,144 4,931,430 6,575,240 9,862,860 and 19,725,720, with no remainder.

Since 19,725,720 cannot be divided by just 1 and 19,725,720, 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).