Q: Is 1,380,320 a Prime Number?
A: No, 1,380,320 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 1380320 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 8,627 17,254 34,508 43,135 69,016 86,270 138,032 172,540 276,064 345,080 690,160 and 1,380,320, with no remainder.
Since 1,380,320 cannot be divided by just 1 and 1,380,320, it is not a prime number.