Q: Is 21,226,400 a Composite Number?

Why is 21,226,400 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 21,226,400 can be evenly divided by 1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 65 80 100 104 130 157 160 169 200 208 260 314 325 338 400 416 520 628 650 676 785 800 845 1,040 1,256 1,300 1,352 1,570 1,690 2,041 2,080 2,512 2,600 2,704 3,140 3,380 3,925 4,082 4,225 5,024 5,200 5,408 6,280 6,760 7,850 8,164 8,450 10,205 10,400 12,560 13,520 15,700 16,328 16,900 20,410 25,120 26,533 27,040 31,400 32,656 33,800 40,820 51,025 53,066 62,800 65,312 67,600 81,640 102,050 106,132 125,600 132,665 135,200 163,280 204,100 212,264 265,330 326,560 408,200 424,528 530,660 663,325 816,400 849,056 1,061,320 1,326,650 1,632,800 2,122,640 2,653,300 4,245,280 5,306,600 10,613,200 and 21,226,400, with no remainder.

Since 21,226,400 cannot be divided by just 1 and 21,226,400, 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).