Q: Is 21,866,040 a Composite Number?

Why is 21,866,040 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 21,866,040 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 30 35 36 40 42 45 56 60 63 70 72 84 90 105 120 126 140 168 180 210 252 280 315 360 420 504 630 840 1,260 2,520 8,677 17,354 26,031 34,708 43,385 52,062 60,739 69,416 78,093 86,770 104,124 121,478 130,155 156,186 173,540 182,217 208,248 242,956 260,310 303,695 312,372 347,080 364,434 390,465 485,912 520,620 546,651 607,390 624,744 728,868 780,930 911,085 1,041,240 1,093,302 1,214,780 1,457,736 1,561,860 1,822,170 2,186,604 2,429,560 2,733,255 3,123,720 3,644,340 4,373,208 5,466,510 7,288,680 10,933,020 and 21,866,040, with no remainder.

Since 21,866,040 cannot be divided by just 1 and 21,866,040, 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).