Here are the universal numbers and the languages they come from. Learn to count this way and you have the highest chance to be understood if you are talking to a random person (admittedly still not a very high chance, but still).
You can find the code on https://github.com/DOsinga/universal_numbers
As a side effect of comparing all languages with all languages, we also end up with a distance matrix for language to language. We can easily create a tree out of this:
You can read more about this on the corresponding blog post.