Q: Is 728,400 a Prime Number?
A: No, 728,400 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 728400 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 40 48 50 60 75 80 100 120 150 200 240 300 400 600 607 1,200 1,214 1,821 2,428 3,035 3,642 4,856 6,070 7,284 9,105 9,712 12,140 14,568 15,175 18,210 24,280 29,136 30,350 36,420 45,525 48,560 60,700 72,840 91,050 121,400 145,680 182,100 242,800 364,200 and 728,400, with no remainder.
Since 728,400 cannot be divided by just 1 and 728,400, it is not a prime number.