Q: Is 723,440 a Prime Number?
A: No, 723,440 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 723440 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 9,043 18,086 36,172 45,215 72,344 90,430 144,688 180,860 361,720 and 723,440, with no remainder.
Since 723,440 cannot be divided by just 1 and 723,440, it is not a prime number.