Q: Is 21,602,240 a Composite Number?

Why is 21,602,240 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 21,602,240 can be evenly divided by 1 2 4 5 8 10 11 16 17 19 20 22 32 34 38 40 44 55 64 68 76 80 85 88 95 110 136 152 160 170 176 187 190 209 220 272 304 320 323 340 352 361 374 380 418 440 544 608 646 680 704 722 748 760 836 880 935 1,045 1,088 1,216 1,292 1,360 1,444 1,496 1,520 1,615 1,672 1,760 1,805 1,870 2,090 2,584 2,720 2,888 2,992 3,040 3,230 3,344 3,520 3,553 3,610 3,740 3,971 4,180 5,168 5,440 5,776 5,984 6,080 6,137 6,460 6,688 7,106 7,220 7,480 7,942 8,360 10,336 11,552 11,968 12,274 12,920 13,376 14,212 14,440 14,960 15,884 16,720 17,765 19,855 20,672 23,104 24,548 25,840 28,424 28,880 29,920 30,685 31,768 33,440 35,530 39,710 49,096 51,680 56,848 57,760 59,840 61,370 63,536 66,880 67,507 71,060 79,420 98,192 103,360 113,696 115,520 122,740 127,072 135,014 142,120 158,840 196,384 227,392 245,480 254,144 270,028 284,240 317,680 337,535 392,768 490,960 540,056 568,480 635,360 675,070 981,920 1,080,112 1,136,960 1,270,720 1,350,140 1,963,840 2,160,224 2,700,280 4,320,448 5,400,560 10,801,120 and 21,602,240, with no remainder.

Since 21,602,240 cannot be divided by just 1 and 21,602,240, 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).