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

Created by @bmtran (Bryant Tran)

Solve Later

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.

Solve

Solution Stats

821 Solutions
174 Solvers

Last Solution submitted on Dec 02, 2025

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

@bmtran (Bryant Tran) on 4 Feb 2012

added a test case to make it a wee bit harder

Hoang Minh Tri on 19 Nov 2025 at 19:40

ta cần nhân 2 cho đến khi đủ mũ n và hãy lưu ý rằng nên để kết quả dưới dạng char để tránh bị tràn số vì input là mũ rất lớn

Solution Comments

Show comments

Problem Recent Solvers174

Suggested Problems

Better bullseye matrix

248 Solvers
Indirect Sorting

312 Solvers
Is X a Fibonacci Matrix?

761 Solvers
Getting the indices from a matrix

707 Solvers
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)

1989 Solvers

More from this Author56

Recurring Cycle Length (Inspired by Project Euler Problem 26)

157 Solvers
Clock Hand Angle 1

306 Solvers
Inhomogenous Depth Scale Interpolation

7 Solvers
Next Higher Power of B

150 Solvers
Test if a Number is a Palindrome without using any String Operations

249 Solvers

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!