Table of 28

Introduction The number 28 (or twenty-eight) is a natural number that comes after 27 and before 29. It is a composite number, with 1, 2, 4, 7, and 14 as its proper divisors. The second perfect number is twenty-eight, which is equal to the sum of its proper divisors: \begin{equation} 1+2+4+7+14=28 \end{equation}. Being a perfect number, \begin{equation} 23-1 \text { times }(23-1)=28 \end{equation}relates it to the Mersenne prime 7, which is also a perfect number. 496 is the previous perfect number after 6. Table of Content Some definitions in maths Factors of 28 Table of 28 in Words Solved...