Q: Is 821,472 a Prime Number?
A: No, 821,472 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 821472 can be evenly divided by 1 2 3 4 6 8 12 16 24 32 43 48 86 96 129 172 199 258 344 398 516 597 688 796 1,032 1,194 1,376 1,592 2,064 2,388 3,184 4,128 4,776 6,368 8,557 9,552 17,114 19,104 25,671 34,228 51,342 68,456 102,684 136,912 205,368 273,824 410,736 and 821,472, with no remainder.
Since 821,472 cannot be divided by just 1 and 821,472, it is not a prime number.