How to check if a number is Fascinating
What is Fascinating number If a number of at least three digits is concatenated with its products by 2 and…
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How to check Pronic number in java
What is a Pronic Number ? A number which is the product of two consecutive numbers is a Pronic Number….
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How to check if a number is a Harshad (or Niven) Number in java
What is Harshad (or Niven) Number ? A number which is completely divisible by the sum of its digits is…
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How to check for a Disarium number in java
What is Disarium Number? Consider a number such as 135. Its digits are 1, 3 and 5 with 1 at…
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How to check for an Evil number in java
Evil NumberA number which when converted to binary format has an even number of 1’s is an Evil number. An…
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How to check for a Duck number in java
Duck Number ? If a number contains one or more zeroes but does not start with a zero, it is…
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How to calculate Brun’s Constant till a given number in java
What is Brun’s constant Viggo Brun in 1919 devised a theorem which states that the sum of reciprocals of twin…
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How to check for a perfect number in java
What is a perfect number? A positive integer whose sum of all factors(including 1 and excluding the number) is equal…
5 Min Read
Check Kaprekar number In Java
What is Kaprekar Number? A number whose square when divided into 2 parts and each part is added, the result…