Q: Is 2,166,428 a Prime Number?
A: No, 2,166,428 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 2166428 can be evenly divided by 1 2 4 11 22 44 53 106 212 583 929 1,166 1,858 2,332 3,716 10,219 20,438 40,876 49,237 98,474 196,948 541,607 1,083,214 and 2,166,428, with no remainder.
Since 2,166,428 cannot be divided by just 1 and 2,166,428, it is not a prime number.