11805906 has 32 divisors (see below), whose sum is σ = 27151488. Its totient is φ = 3352320.

The previous prime is 11805889. The next prime is 11805919. The reversal of 11805906 is 60950811.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6826 + ... + 8378.

It is an arithmetic number, because the mean of its divisors is an integer number (848484).

Almost surely, 2^11805906 is an apocalyptic number.

11805906 is an abundant number, since it is smaller than the sum of its proper divisors (15345582).

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

11805906 is a wasteful number, since it uses less digits than its factorization.

11805906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 11805906 is about 3435.9723514604. The cubic root of 11805906 is about 227.7017877168.

The spelling of 11805906 in words is "eleven million, eight hundred five thousand, nine hundred six".