11810885 has 8 divisors (see below), whose sum is σ = 14193816. Its totient is φ = 9434880.

The previous prime is 11810879. The next prime is 11810947. The reversal of 11810885 is 58801811.

It can be written as a sum of positive squares in 4 ways, for example, as 1267876 + 10543009 = 1126^2 + 3247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11810885 - 2⁸ = 11810629 is a prime.

It is a super-3 number, since 3×11810885³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425 + ... + 5945.

It is an arithmetic number, because the mean of its divisors is an integer number (1774227).

Almost surely, 2^11810885 is an apocalyptic number.

It is an amenable number.

11810885 is a deficient number, since it is larger than the sum of its proper divisors (2382931).

11810885 is an equidigital number, since it uses as much as digits as its factorization.

11810885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463.

The product of its (nonzero) digits is 2560, while the sum is 32.

The square root of 11810885 is about 3436.6968152573. The cubic root of 11810885 is about 227.7337933887.

The spelling of 11810885 in words is "eleven million, eight hundred ten thousand, eight hundred eighty-five".