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Why Is 28 A Special Number? [Solved]

It is a composite number, its proper divisors being 1, 2, 4, 7, and 14. Twenty-eight is the second perfect number - it’s the sum of its divisors: 1+2+4+7+14. As a perfect number, it is related to the Mersenne prime 7, since 2(23 − 1) = 28.

Special Programs in C − Check If The Number Is Perfect Number

C Programming & Data Structures:

SPECIAL SERIES IN TAMIL | Number System in Tamil | TNPSC Maths | Maths Shortcuts | Aptitude in Tamil

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