Playing with numbers
A number is said to be the ‘Harshad number’ if it is divisible by the sum of its digit. Harshad numbers were defined by D. R. Kaprekar, a mathematician from India. The word “harshad” comes from the Sanskrit harṣa (joy) + da (give), meaning joy-giver.
For example: if number is 156, then sum of its digit will be 1 + 5 + 6 = 12. Since 156 is divisible by 12, it is a Harshad number.
Example 2: if we take the year 2020, the the sum of it will be 2 + 0 + 2 + 0 = 4. Since 2020 is divisible by 4, 2020 is a Harshad number.
Ready to test this knowledge? Take a look at the numbers in each set below and click on the number that is a Harshad number.