Q: Is 28,040 a Prime Number?

A: No, 28,040 is not a prime number.

Why is 28,040 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 28040 can be evenly divided by 1 2 4 5 8 10 20 40 701 1,402 2,804 3,505 5,608 7,010 14,020 and 28,040, with no remainder.

Since 28,040 cannot be divided by just 1 and 28,040, it is not a prime number.

Number	28,038	28,039	28,041	28,042
Prime?	no	no	no	no

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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