Q: Is 520,428 a Prime Number?
A: No, 520,428 is 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 520428 can be evenly divided by 1 2 3 4 6 12 31 62 93 124 186 372 1,399 2,798 4,197 5,596 8,394 16,788 43,369 86,738 130,107 173,476 260,214 and 520,428, with no remainder.
Since 520,428 cannot be divided by just 1 and 520,428, it is not a prime number.