When Glide recognizes a column as containing numbers, you will see the number symbol in the Data Editor and have access to specific formatting options.
The first formatting option is the 'Precision' of the number which allows you to increase/decrease the number of decimal places.
The second option allows you to use a 1000 separator on large numbers.
In the app below we're managing podcast episodes. Instead of manually writing a text column with 'Episode 1', 'Episode 2', 'Episode 3' etc... we can simply add a number column and add a unit before or after our number. In this case we ad 'Episode ' before our number.