13213806 has 16 divisors (see below), whose sum is σ = 26469504. Its totient is φ = 4397624.

The previous prime is 13213769. The next prime is 13213829. The reversal of 13213806 is 60831231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3631 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (1654344).

Almost surely, 2^13213806 is an apocalyptic number.

13213806 is an abundant number, since it is smaller than the sum of its proper divisors (13255698).

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

13213806 is a wasteful number, since it uses less digits than its factorization.

13213806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 13213806 is about 3635.0799165906. The cubic root of 13213806 is about 236.4155157146.

The spelling of 13213806 in words is "thirteen million, two hundred thirteen thousand, eight hundred six".