Question

A Harshad number (or a Niven number) is a number that is evenly divisible by the sum of its digits. An example is 18 (1+8=9, 18%9 = 0). Write a function called isHarshad(num) that takes an integer as an argument and returns True if the number is a Harshad number and False if it is not. Then, use this function to create a list of all of the Harshad numbers in the first 500 natural numbers.

Answer 1

Python code pasted below.

#function definition
def isHarshad(num):
#initialize sum to 0
sum=0
#convert num to string
s=str(num)
#Take each digit from the string
for i in range(len(s)):
#convert each digit to integer and find the sum.
sum=sum+int(s[i])
#If Harshad number return true else retun false   
if num%sum==0:
return True
else:
return False
#main program
#Generate a list of all harshad numbers in first 500 natural numbers
#initalize an empty list
harshad=[]
for i in range(1,501):
if(isHarshad(i)):
harshad.append(i)
print("List of all harshad numbers in first 500 natural numbers is ",harshad)

Python code in IDLE pasted for better understanding of the indent.

Output screen