Q: Is 28,455 a Prime Number?
A: No, 28,455 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 28455 can be evenly divided by 1 3 5 7 15 21 35 105 271 813 1,355 1,897 4,065 5,691 9,485 and 28,455, with no remainder.
Since 28,455 cannot be divided by just 1 and 28,455, it is not a prime number.