An Armstrong number is a number that is equal to the sum of its own digits raised to the power of the number of digits.
Consider 153. It has 3 digits, so we raise each digit to the power of 3(the number of digits) and sum them up:
1^3 + 5^3 + 3^3 = 1 + 125 + 27 = 153
Checking Armstrong Number using for loop in Python
n = str(int(input("Enter an integer: ")))
digit_sum = 0
for i in n:
digit_sum = digit_sum + int(i)**len(n)
if int(n) == digit_sum:
print(n, "is an Armstrong number")
else:
print(n, "is not an Armstrong number")Output:
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