Q: Is 20,821,000 a Composite Number?

Why is 20,821,000 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 20,821,000 can be evenly divided by 1 2 4 5 8 10 20 25 40 47 50 94 100 125 188 200 235 250 376 443 470 500 886 940 1,000 1,175 1,772 1,880 2,215 2,350 3,544 4,430 4,700 5,875 8,860 9,400 11,075 11,750 17,720 20,821 22,150 23,500 41,642 44,300 47,000 55,375 83,284 88,600 104,105 110,750 166,568 208,210 221,500 416,420 443,000 520,525 832,840 1,041,050 2,082,100 2,602,625 4,164,200 5,205,250 10,410,500 and 20,821,000, with no remainder.

Since 20,821,000 cannot be divided by just 1 and 20,821,000, 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).