Harshad number

短语

词形变化

Harshad numbers 复数 Harshad numbers

释义与例句

n.
  1. 1.

    A positive integer which is divisible by the sum of all of its digits.

    数学

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

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.

来源：wiktionary