Q: Is 638,428 a Composite Number?
A: Yes, 638,428 is a composite number.
The number 638,428 can be evenly divided by 1 2 4 7 14 28 151 302 604 1,057 2,114 4,228 22,801 45,602 91,204 159,607 319,214 and 638,428, with no remainder.
Since 638,428 cannot be divided by just 1 and 638,428, it is a composite number.