1. 60 is a "superior highly composite number" following the equation below:
Other example of superior highly composite numbers are: 2, 6, 12, 60, 120, 360, 2520, 5040.
2. 60 was a base used for the Babylonian number system. It is thought that it is possible that the Babylonian's obsession with this number was the bases for 60 seconds in a minute and 60 minutes in an hour. The reasons however there are not 60 hours in a day is thought to be the fact that it would make the second too short to measure. In fact if the Babylonian's wanted to have 60 hours in a day, the "second" would have to be 0.4 seconds long.
3. A "perfect" number is one that satisfies both of the following criterion:
1. The sum of its proper divisors equals the number
2. The sum of all it's divisors divided by two equals the number
E.G 28
proper divisors: 1, 2, 4, 7, 14
1+2+4+7+14=28
divisors: 1, 2, 4, 7, 14, 28
(1+2+4+7+14+28)/2=28
March 26, 2011
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