Q: Is 38,720 a Prime Number?
A: No, 38,720 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 38720 can be evenly divided by 1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 80 88 110 121 160 176 220 242 320 352 440 484 605 704 880 968 1,210 1,760 1,936 2,420 3,520 3,872 4,840 7,744 9,680 19,360 and 38,720, with no remainder.
Since 38,720 cannot be divided by just 1 and 38,720, it is not a prime number.