11808885 has 16 divisors (see below), whose sum is σ = 20612160. Its totient is φ = 5725440.

The previous prime is 11808871. The next prime is 11808917. The reversal of 11808885 is 58880811.

It is not a de Polignac number, because 11808885 - 2⁴ = 11808869 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 35620 + ... + 35949.

It is an arithmetic number, because the mean of its divisors is an integer number (1288260).

Almost surely, 2^11808885 is an apocalyptic number.

11808885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11808885 is a deficient number, since it is larger than the sum of its proper divisors (8803275).

11808885 is a wasteful number, since it uses less digits than its factorization.

11808885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71588.

The product of its (nonzero) digits is 20480, while the sum is 39.

The square root of 11808885 is about 3436.4058258593. The cubic root of 11808885 is about 227.7209382047.

The spelling of 11808885 in words is "eleven million, eight hundred eight thousand, eight hundred eighty-five".