How do I show 1000 as 1.000 etc

Hi,

I got a fairly easy question here but i can not find the answer and at this point i'm afraid i am looking for with the wrong search terms.

So i figured i could ask here.

The question is like the title says: How do i show 1000 as 1.000, 10000 as 10.000 and so on?

I almost feel stupid for asking this but i just can't find the right syntax.

Thanks!