Latest Ubuntu 14.04 have something called Multiarch. That means, you can run 32 bit binary in a 64 bit OS. Atleast that is what i understand 🙂

You can read more about Multiarch at

https://wiki.debian.org/Multiarch

So you need to install Multiarch version of TeamViewer.

Go to

http://www.teamviewer.com/hi/download/linux.aspx

Download the 32-Bit / 64-Bit Multiarch version. Double click to install.