
02-01-2011, 06:38 PM
|
|
Senior Member
|
|
Join Date: Feb 2004
Posts: 54,198
Thanks: 26,857
Thanked 1,871,924 Times in 55,632 Posts
|
|
70/100
100 can be expressed as a sum of some of its divisors making it a semi-perfect number.
100 is divisible by the number of primes below it (25) making it a polygonal number.
100 is divisible by the sum of its digits (in both base 10 and base 4) making it a Harshad
|