Q: Is 561,728 a Prime Number?
A: No, 561,728 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 561728 can be evenly divided by 1 2 4 8 16 32 64 67 131 134 262 268 524 536 1,048 1,072 2,096 2,144 4,192 4,288 8,384 8,777 17,554 35,108 70,216 140,432 280,864 and 561,728, with no remainder.
Since 561,728 cannot be divided by just 1 and 561,728, it is not a prime number.