Q: Is 285,720 a Prime Number?
A: No, 285,720 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 285720 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 2,381 4,762 7,143 9,524 11,905 14,286 19,048 23,810 28,572 35,715 47,620 57,144 71,430 95,240 142,860 and 285,720, with no remainder.
Since 285,720 cannot be divided by just 1 and 285,720, it is not a prime number.