Q: Is 726,408 a Prime Number?
A: No, 726,408 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 726408 can be evenly divided by 1 2 3 4 6 8 9 12 18 19 24 27 36 38 54 57 59 72 76 81 108 114 118 152 162 171 177 216 228 236 324 342 354 456 472 513 531 648 684 708 1,026 1,062 1,121 1,368 1,416 1,539 1,593 2,052 2,124 2,242 3,078 3,186 3,363 4,104 4,248 4,484 4,779 6,156 6,372 6,726 8,968 9,558 10,089 12,312 12,744 13,452 19,116 20,178 26,904 30,267 38,232 40,356 60,534 80,712 90,801 121,068 181,602 242,136 363,204 and 726,408, with no remainder.
Since 726,408 cannot be divided by just 1 and 726,408, it is not a prime number.