"""
215 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.

What is the sum of the digits of the number 21000?
"""


def sum_of_digits(n):
    p = 2 ** n
    s = 0
    for i in str(p):
        s += int(i)
    return(s)


print(sum_of_digits(1000))
