Q: Is 21,400 a Composite Number?
A: Yes, 21,400 is a composite number.
The number 21,400 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 100 107 200 214 428 535 856 1,070 2,140 2,675 4,280 5,350 10,700 and 21,400, with no remainder.
Since 21,400 cannot be divided by just 1 and 21,400, it is a composite number.