Q: Is 21,530,760 a Composite Number?

Why is 21,530,760 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 21,530,760 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 23 24 29 30 40 46 58 60 69 87 92 115 116 120 138 145 174 184 230 232 269 276 290 345 348 435 460 538 552 580 667 690 696 807 870 920 1,076 1,160 1,334 1,345 1,380 1,614 1,740 2,001 2,152 2,668 2,690 2,760 3,228 3,335 3,480 4,002 4,035 5,336 5,380 6,187 6,456 6,670 7,801 8,004 8,070 10,005 10,760 12,374 13,340 15,602 16,008 16,140 18,561 20,010 23,403 24,748 26,680 30,935 31,204 32,280 37,122 39,005 40,020 46,806 49,496 61,870 62,408 74,244 78,010 80,040 92,805 93,612 117,015 123,740 148,488 156,020 179,423 185,610 187,224 234,030 247,480 312,040 358,846 371,220 468,060 538,269 717,692 742,440 897,115 936,120 1,076,538 1,435,384 1,794,230 2,153,076 2,691,345 3,588,460 4,306,152 5,382,690 7,176,920 10,765,380 and 21,530,760, with no remainder.

Since 21,530,760 cannot be divided by just 1 and 21,530,760, 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).