Problem 252. Project Euler: Problem 16, Sums of Digits of Powers of Two

2^15 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.

What is the sum of the digits of the number 2^N?

Thanks to Project Euler Problem 16.

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25.95% Correct | 74.05% Incorrect
Last Solution submitted on Nov 19, 2025

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