Is 21 a cube number?

Cube Question: Is 21 a cube number?

For 21 to be a cube number the following equation must be true:

n3 = 21 where n is a whole number.

In other words, if n*n*n = 21, then 21 is a cube number.

There are no whole numbers you can set to n to make the equation above 21. Therefore, we can conclude that 21 is NOT a cube number.

Answer: Is 21 a cube number? = NO

Cube Number?
Check other numbers to see if they are cube.

List of Cube Numbers
Here is a list of cube numbers.

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