20636526 has 16 divisors (see below), whose sum is σ = 41401728. Its totient is φ = 6857400.

The previous prime is 20636513. The next prime is 20636549. The reversal of 20636526 is 62563602.

It is a junction number, because it is equal to n+sod(n) for n = 20636493 and 20636502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3210 + ... + 7181.

It is an arithmetic number, because the mean of its divisors is an integer number (2587608).

Almost surely, 2^20636526 is an apocalyptic number.

20636526 is an abundant number, since it is smaller than the sum of its proper divisors (20765202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20636526 is a wasteful number, since it uses less digits than its factorization.

20636526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10727.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 20636526 is about 4542.7443247447. The cubic root of 20636526 is about 274.2914032643.

The spelling of 20636526 in words is "twenty million, six hundred thirty-six thousand, five hundred twenty-six".