Q: Is 28,440 a Prime Number?
A: No, 28,440 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 28440 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 79 90 120 158 180 237 316 360 395 474 632 711 790 948 1,185 1,422 1,580 1,896 2,370 2,844 3,160 3,555 4,740 5,688 7,110 9,480 14,220 and 28,440, with no remainder.
Since 28,440 cannot be divided by just 1 and 28,440, it is not a prime number.