Q: Is 72,820 a Prime Number?
A: No, 72,820 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 72820 can be evenly divided by 1 2 4 5 10 11 20 22 44 55 110 220 331 662 1,324 1,655 3,310 3,641 6,620 7,282 14,564 18,205 36,410 and 72,820, with no remainder.
Since 72,820 cannot be divided by just 1 and 72,820, it is not a prime number.