Tough call, me. In Queen's English that's about £17 Million.
I would split it the money in four and spend just over £4 Million on each of the following.
1) Charitable Causes - Help the most people possible with the money allocated wherever they may be on Earth.
2) Personal Development - Accomplish anything I feel I need for self-fulfillment without the financial barriers you'd usually get.
3) Savings/Investments - I'd research this first but I'd channel money into some kind of business venture which is not necessarily profitable but which can benefit the local, national or global markets.
4) Fun stuff - I won't disguise the fact that I'm going to want to selfishly splurge on things and experiences that I want. Like a chocolate fountain prominently displayed in the main hallway of my house.