11813806 has 16 divisors (see below), whose sum is σ = 18370800. Its totient is φ = 5694208.

The previous prime is 11813803. The next prime is 11813807. The reversal of 11813806 is 60831811.

It is a happy number.

11813806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11813803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5310 + ... + 7198.

It is an arithmetic number, because the mean of its divisors is an integer number (1148175).

Almost surely, 2^11813806 is an apocalyptic number.

11813806 is a deficient number, since it is larger than the sum of its proper divisors (6556994).

11813806 is a wasteful number, since it uses less digits than its factorization.

11813806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 11813806 is about 3437.1217610088. The cubic root of 11813806 is about 227.7525657776.

It can be divided in two parts, 118 and 13806, that added together give a square (13924 = 118²).

The spelling of 11813806 in words is "eleven million, eight hundred thirteen thousand, eight hundred six".