Q: Is 40,640 a Prime Number?
A: No, 40,640 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 40640 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 127 160 254 320 508 635 1,016 1,270 2,032 2,540 4,064 5,080 8,128 10,160 20,320 and 40,640, with no remainder.
Since 40,640 cannot be divided by just 1 and 40,640, it is not a prime number.