Q: Is 19,428 a Prime Number?
A: No, 19,428 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 19428 can be evenly divided by 1 2 3 4 6 12 1,619 3,238 4,857 6,476 9,714 and 19,428, with no remainder.
Since 19,428 cannot be divided by just 1 and 19,428, it is not a prime number.