Q: Is 15,978 a Composite Number?
A: Yes, 15,978 is a composite number.
The number 15,978 can be evenly divided by 1 2 3 6 2,663 5,326 7,989 and 15,978, with no remainder.
Since 15,978 cannot be divided by just 1 and 15,978, it is a composite number.