11890806 has 16 divisors (see below), whose sum is σ = 23890944. Its totient is φ = 3945384.

The previous prime is 11890799. The next prime is 11890807. The reversal of 11890806 is 60809811.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11890807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3106 + ... + 5781.

It is an arithmetic number, because the mean of its divisors is an integer number (1493184).

Almost surely, 2^11890806 is an apocalyptic number.

11890806 is an abundant number, since it is smaller than the sum of its proper divisors (12000138).

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

11890806 is a wasteful number, since it uses less digits than its factorization.

11890806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9115.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 11890806 is about 3448.3048009131. The cubic root of 11890806 is about 228.2463096839.

The spelling of 11890806 in words is "eleven million, eight hundred ninety thousand, eight hundred six".