Q: Is 1,821,000 a Composite Number?

Why is 1,821,000 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 1,821,000 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 25 30 40 50 60 75 100 120 125 150 200 250 300 375 500 600 607 750 1,000 1,214 1,500 1,821 2,428 3,000 3,035 3,642 4,856 6,070 7,284 9,105 12,140 14,568 15,175 18,210 24,280 30,350 36,420 45,525 60,700 72,840 75,875 91,050 121,400 151,750 182,100 227,625 303,500 364,200 455,250 607,000 910,500 and 1,821,000, with no remainder.

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