Python/project_euler/problem_16/sol1.py

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"""
2^15 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.
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What is the sum of the digits of the number 2^1000?
"""
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def solution(power):
"""Returns the sum of the digits of the number 2^power.
>>> solution(1000)
1366
>>> solution(50)
76
>>> solution(20)
31
>>> solution(15)
26
"""
num = 2 ** power
string_num = str(num)
list_num = list(string_num)
sum_of_num = 0
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for i in list_num:
sum_of_num += int(i)
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return sum_of_num
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if __name__ == "__main__":
power = int(input("Enter the power of 2: ").strip())
print("2 ^ ", power, " = ", 2 ** power)
result = solution(power)
print("Sum of the digits is: ", result)