The most annoying passerby greeting that you can ever come across.
I'm not even going to put a question mark behind that because it's not even adressed as a question, it's not even said as a sentence. It's all one long word of a greeting.
No pauses in their steps, all you get is a quick smile and heyhowareyou, you manage to put across a 'hey' and if you're lucky, a quick smile back again, unless they already are five metres past you.
What's the point in even saying it if you're not going to stop and wait for an answer. At least do one of those two..
My suggestion? Take the word out of the English vernacular altogether. "Hi" should suffice if you're not asking a question anyway.