Q: Is 720,328 a Prime Number?
A: No, 720,328 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 720328 can be evenly divided by 1 2 4 7 8 14 19 28 38 56 76 133 152 266 532 677 1,064 1,354 2,708 4,739 5,416 9,478 12,863 18,956 25,726 37,912 51,452 90,041 102,904 180,082 360,164 and 720,328, with no remainder.
Since 720,328 cannot be divided by just 1 and 720,328, it is not a prime number.