Q: Is 3,640,028 a Prime Number?
A: No, 3,640,028 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 3640028 can be evenly divided by 1 2 4 7 14 28 71 142 284 497 994 1,831 1,988 3,662 7,324 12,817 25,634 51,268 130,001 260,002 520,004 910,007 1,820,014 and 3,640,028, with no remainder.
Since 3,640,028 cannot be divided by just 1 and 3,640,028, it is not a prime number.