Depending on the context and usage scenario, the number "w" can be changed into many different things. Here are some possible alternatives:

1. letter "v": In some cases, "w" and "v" can be used interchangeably, for example, in English words.

2. Number "2": In some digital systems, "w" can be represented as "2".

3. Symbol "∫": In mathematics, "w" can be expressed as the division symbol "∫".

4. Symbol "X": In some mathematical formulas, "W" can be expressed as the multiplication symbol "X".

5. Word "week": In some cases, "w" can be expressed as the abbreviation of the word "week".