Numberphile is only possible because of support from the Mathematical Sciences Research Institute (MSRI), in Berkeley, California. Click on their logo at the top of this page for more info.
However we're also supported by our viewers in many ways.
Here's a list of people contributing by "adopting a number". Their help makes it possible for us to try a few extra things, including the use of animation and travelling to the world's best mathematicians.
You can contribute (maybe adopt a number yourself) by visiting our Patreon Page.