Q: Is 216,428 a Prime Number?
A: No, 216,428 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 216428 can be evenly divided by 1 2 4 61 122 244 887 1,774 3,548 54,107 108,214 and 216,428, with no remainder.
Since 216,428 cannot be divided by just 1 and 216,428, it is not a prime number.