8 is 100% my favourite number 8) Not only is it a lucky number in Vietnamese culture, it's so central to me and my personal details! I was born on the 8th of August and my street number is also 8 :) My best birthday was on the 8/8/08 which was the Beijing Olympics and I turned 8 that year :D In short, 8 is definitely it ;D
My little bro was actually born on 08/08/08 (he sure loves to boast about it; I would if I were him).
As for my favourite number, it would have to be 22. It's the day of both mine and my Grandpa's birthday. As was already mentioned, it's also quite nice to look at.(http://blogs.walkerart.org/design/files/2016/09/BI22_Symbol_22.png)
Wonderful.