Q: Is 72,428 a Prime Number?
A: No, 72,428 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 72428 can be evenly divided by 1 2 4 19 38 76 953 1,906 3,812 18,107 36,214 and 72,428, with no remainder.
Since 72,428 cannot be divided by just 1 and 72,428, it is not a prime number.