11912806 has 16 divisors (see below), whose sum is σ = 18551808. Its totient is φ = 5733000.

The previous prime is 11912731. The next prime is 11912807. The reversal of 11912806 is 60821911.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11912807) 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, 5131 + ... + 7081.

It is an arithmetic number, because the mean of its divisors is an integer number (1159488).

Almost surely, 2^11912806 is an apocalyptic number.

11912806 is a deficient number, since it is larger than the sum of its proper divisors (6639002).

11912806 is a wasteful number, since it uses less digits than its factorization.

11912806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 11912806 is about 3451.4933000080. The cubic root of 11912806 is about 228.3869877049.

The spelling of 11912806 in words is "eleven million, nine hundred twelve thousand, eight hundred six".