Q: Is 21,680 a Composite Number?
A: Yes, 21,680 is a composite number.
The number 21,680 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 271 542 1,084 1,355 2,168 2,710 4,336 5,420 10,840 and 21,680, with no remainder.
Since 21,680 cannot be divided by just 1 and 21,680, it is a composite number.