# What is number -40 cubed?

-40 cubed equals -64000, because (-40) × (-40) × (-40) = -64000.

Once -64000 = (-40) × (-40) × (-40), -64000 is also known as a, so called, perfect cube.

Use the cube calculator below to find the cube of any real number. See below the definition and examples of cubed numbers.

## What is a cube and how to calculate its volume?

A cube is a three-dimensional shape that has all edges of equal length. The volume of a cube is given by the product of its three dimensions. For example, if the edges of a cube measure "a" centimeters, the volume of the cube will be given by the product "a × a × a", which is equal the 3rd power. The Rubik's cube shown has its edges equal to 3 units. So, its volume is:

a^{3} = a × a × a = a^{3} = 3 × 3 × 3 = 27 units or cubic centimeters (27 cm^{3}) (if we choose our volume unit as cubic centimeters).

Um perfect number, also called a cube number, is a number written by using the formula S_{n} = n^{2}, where n is an integer.

Image credits speedcubing.com

### Notice that:

- 0 cubed is 0 (just make n = 0 in the formula S
_{n}= n^{2}) - 1 cubed is 1 (just make n = 1)
- Negative 0 cubed is 0 (just make n = 0)
- Negative 1 cubed is -1 (just make n = 1)

## Cubed Numbers or Perfect Cube Tables

### Cubed Numbers Table for Positive Numbers

Cubed Positive Numbers |
---|

0 cubed equals 0 |

1 cubed equals 1 |

2 cubed equals 8 |

3 cubed equals 27 |

4 cubed equals 64 |

5 cubed equals 125 |

6 cubed equals 216 |

7 cubed equals 343 |

8 cubed equals 512 |

9 cubed equals 729 |

10 cubed equals 1000 |

11 cubed equals 1331 |

12 cubed equals 1728 |

13 cubed equals 2197 |

14 cubed equals 2744 |

15 cubed equals 3375 |

16 cubed equals 4096 |

17 cubed equals 4913 |

18 cubed equals 5832 |

19 cubed equals 6859 |

20 cubed equals 8000 |

### Cubed Numbers Table for Negative Numbers

Cubed Negative Numbers |
---|

-0 cubed equals -0 |

-1 cubed equals -1 |

-2 cubed equals -8 |

-3 cubed equals -27 |

-4 cubed equals -64 |

-5 cubed equals -125 |

-6 cubed equals -216 |

-7 cubed equals -343 |

-8 cubed equals -512 |

-9 cubed equals -729 |

-10 cubed equals -1000 |

-11 cubed equals -1331 |

-12 cubed equals -1728 |

-13 cubed equals -2197 |

-14 cubed equals -2744 |

-15 cubed equals -3375 |

-16 cubed equals -4096 |

-17 cubed equals -4913 |

-18 cubed equals -5832 |

-19 cubed equals -6859 |

-20 cubed equals -8000 |