Q: Is 1,997,628 a Prime Number?
A: No, 1,997,628 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 1997628 can be evenly divided by 1 2 3 4 6 12 61 122 183 244 366 732 2,729 5,458 8,187 10,916 16,374 32,748 166,469 332,938 499,407 665,876 998,814 and 1,997,628, with no remainder.
Since 1,997,628 cannot be divided by just 1 and 1,997,628, it is not a prime number.