Q: Is 1,635,240 a Prime Number?
A: No, 1,635,240 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 1635240 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 13,627 27,254 40,881 54,508 68,135 81,762 109,016 136,270 163,524 204,405 272,540 327,048 408,810 545,080 817,620 and 1,635,240, with no remainder.
Since 1,635,240 cannot be divided by just 1 and 1,635,240, it is not a prime number.