1728

Meanings

1. 1number

   The whole number that comes after 1727 and before 1729, equal to 12 multiplied by itself three times.

   Grammar: Used like any other number: it can count things or stand alone as a value, and it never changes form.

   Patterns

   • 1728 of something
   • in 1728
   • 1728 cubic inches

   The answer to the puzzle turned out to be 1728.

   She wrote 1728 in the box at the top of the page.

   Our street number is 1728, right next to the bakery.

2. 2numbertechnical

   A quantity of 1728 units, especially the number of cubic inches that make up one cubic foot.

   Grammar: Often followed by a unit noun such as cubic inches or square feet when it measures something.

   Patterns

   • 1728 cubic inches
   • 1728 units
   • 1728 square feet

   There are 1728 cubic inches in a single cubic foot.

   The tank holds 1728 cubic inches of water.

   To change cubic feet into cubic inches, multiply by 1728.

Common combinations

multiply by 1728

To convert cubic feet to cubic inches, multiply by 1728.

1728 cubic inches

One cubic foot contains 1728 cubic inches.

divide by 1728

Divide the volume by 1728 to get cubic feet.

12 cubed, or 1728

Twelve cubed, or 1728, is easy to work out on paper.

the number 1728

The number 1728 is a perfect cube.

Synonyms and how they differ

twelve cubed

Use this when you want to show how the number is built rather than give the value.

a gross dozen

An old-fashioned trading phrase for twelve dozen, which is 144 and much smaller than 1728.

Word family

cube noun

The result of multiplying a number by itself twice, as 1728 is the cube of 12.

cubic adjective

Describing a measurement in three dimensions, as in cubic inches.

Commonly confused: 1728 or 1729? 1728 or 144?

Practice

Make it your own

Write a sentence using “1728”, then check it and compare it with the examples above.

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