Q: Is 428,920 a Prime Number?
A: No, 428,920 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 428920 can be evenly divided by 1 2 4 5 8 10 20 40 10,723 21,446 42,892 53,615 85,784 107,230 214,460 and 428,920, with no remainder.
Since 428,920 cannot be divided by just 1 and 428,920, it is not a prime number.