11892881 has 24 divisors (see below), whose sum is σ = 16115904. Its totient is φ = 8475840.

The previous prime is 11892869. The next prime is 11892883. The reversal of 11892881 is 18829811.

It is a happy number.

11892881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11892881 is a prime.

It is a super-2 number, since 2×11892881² = 282881236960322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11892883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109055 + ... + 109163.

It is an arithmetic number, because the mean of its divisors is an integer number (671496).

Almost surely, 2^11892881 is an apocalyptic number.

11892881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11892881 is a deficient number, since it is larger than the sum of its proper divisors (4223023).

11892881 is a wasteful number, since it uses less digits than its factorization.

11892881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 140 counting only the distinct ones).

The product of its digits is 9216, while the sum is 38.

The square root of 11892881 is about 3448.6056602633. The cubic root of 11892881 is about 228.2595855865.

The spelling of 11892881 in words is "eleven million, eight hundred ninety-two thousand, eight hundred eighty-one".