Harshad number

名词 n.

英文释义

名词 n.
  1. A positive integer which is divisible by the sum of all of its digits.
    — The sum of digits of 24 is 2 + 4 = 6, and 24 is divisible by 6, so 24 is a Harshad number.

词形变化

Harshad numbers plural

词源

Coined by Indian recreational mathematician D. R. Kaprekar, from Sanskrit हर्षद (harṣada, “giving joy”). The capitalization is likely based on mathematicians' incorrect assumption that harshad is a proper noun.
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