16 (sixteen) is the natural
number following 15 and preceding 17.
16 is a composite
number, and a square
number, being 42 = 4 -- 4. It is the smallest
number with exactly five divisors, its proper divisors being 1, 2, 4 and 8. In English speech, the
numbers 16 and 60 are sometimes confused, as they sound very similar.
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