Q: Is 780,408 a Prime Number?
A: No, 780,408 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 780408 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 3,613 7,226 10,839 14,452 21,678 28,904 32,517 43,356 65,034 86,712 97,551 130,068 195,102 260,136 390,204 and 780,408, with no remainder.
Since 780,408 cannot be divided by just 1 and 780,408, it is not a prime number.