Q: Is 21,824 a Prime Number?
A: No, 21,824 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 21824 can be evenly divided by 1 2 4 8 11 16 22 31 32 44 62 64 88 124 176 248 341 352 496 682 704 992 1,364 1,984 2,728 5,456 10,912 and 21,824, with no remainder.
Since 21,824 cannot be divided by just 1 and 21,824, it is not a prime number.