Q: Is 28,520 a Prime Number?

A: No, 28,520 is not a prime number.

Why is 28,520 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 28520 can be evenly divided by 1 2 4 5 8 10 20 23 31 40 46 62 92 115 124 155 184 230 248 310 460 620 713 920 1,240 1,426 2,852 3,565 5,704 7,130 14,260 and 28,520, with no remainder.

Since 28,520 cannot be divided by just 1 and 28,520, it is not a prime number.

Number	28,518	28,519	28,521	28,522
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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