Octal number literals: When? Why? Ever? [closed]

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I recently had to write network protocol code that accesses 3-bit fields. Octal comes in handy when you want to debug that.

Just for effect, can you tell me what the 3-bit fields of this are?

0x492492

On the other hand, this same number in octal:

022222222

Now, finally, in binary (in groups of 3):

010 010 010 010 010 010 010 010

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