Harsad
Harshad numbers, also known as Niven numbers, are a specific type of number in mathematics. A number is considered a Harshad number if it is divisible by the sum of its digits. For example, the number 18 is a Harshad number because the sum of its digits (1 + 8 = 9) and 18 is divisible by 9.
The concept of Harshad numbers was introduced by Indian mathematician D.R. Kaprekar. The term "Harshad" is derived
Harshad numbers have several interesting properties and applications in mathematics. They are often used in recreational
In conclusion, Harshad numbers are a fascinating subset of numbers that exhibit a unique divisibility property.