11880891 has 32 divisors (see below), whose sum is σ = 19430400. Its totient is φ = 7115040.

The previous prime is 11880863. The next prime is 11880893. The reversal of 11880891 is 19808811.

It is not a de Polignac number, because 11880891 - 2⁵ = 11880859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11880893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32190 + ... + 32556.

It is an arithmetic number, because the mean of its divisors is an integer number (607200).

Almost surely, 2^11880891 is an apocalyptic number.

11880891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11880891 is a deficient number, since it is larger than the sum of its proper divisors (7549509).

11880891 is a wasteful number, since it uses less digits than its factorization.

11880891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 36.

The square root of 11880891 is about 3446.8668381590. The cubic root of 11880891 is about 228.1828519318.

The spelling of 11880891 in words is "eleven million, eight hundred eighty thousand, eight hundred ninety-one".