Q: Is 2,478,320 a Prime Number?
A: No, 2,478,320 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 2478320 can be evenly divided by 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 208 260 520 1,040 2,383 4,766 9,532 11,915 19,064 23,830 30,979 38,128 47,660 61,958 95,320 123,916 154,895 190,640 247,832 309,790 495,664 619,580 1,239,160 and 2,478,320, with no remainder.
Since 2,478,320 cannot be divided by just 1 and 2,478,320, it is not a prime number.