Harshad number

Coined by Indian recreational mathematician D. R. Kaprekar, from Sanskrit हर्षद (harṣada, “giving joy”).

Harshad number (plural Harshad numbers)

1. (mathematics) A positive integer which is divisible by the sum of all of its digits.

   Synonym: Niven number

   The sum of digits of 24 is 2 + 4 = 6, and 24 is divisible by 6, so 24 is a Harshad number.

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