20836806 has 16 divisors (see below), whose sum is σ = 43867200. Its totient is φ = 6580008.

The previous prime is 20836793. The next prime is 20836817. The reversal of 20836806 is 60863802.

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, 91276 + ... + 91503.

It is an arithmetic number, because the mean of its divisors is an integer number (2741700).

Almost surely, 2^20836806 is an apocalyptic number.

20836806 is an abundant number, since it is smaller than the sum of its proper divisors (23030394).

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

20836806 is a wasteful number, since it uses less digits than its factorization.

20836806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182803.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20836806 is about 4564.7350415988. The cubic root of 20836806 is about 275.1758918821.

The spelling of 20836806 in words is "twenty million, eight hundred thirty-six thousand, eight hundred six".