Mostly they shouldn't need to, but on the off chance it is documented somewhere, it may as well be a "big round number" in human terms rather than computer ones

Mostly they shouldn't need to, but on the off chance it is documented somewhere, it may as well be a "big round number" in human terms rather than computer ones. I often wonder why programmers gravitate powers of two even in places where it doesn't matter (as opposed to say small datatype sizes, where powers of two are useful).