11189868 has 24 divisors (see below), whose sum is σ = 27245568. Its totient is φ = 3567696.

The previous prime is 11189863. The next prime is 11189869. The reversal of 11189868 is 86898111.

It is not an unprimeable number, because it can be changed into a prime (11189863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19996 + ... + 20547.

It is an arithmetic number, because the mean of its divisors is an integer number (1135232).

Almost surely, 2^11189868 is an apocalyptic number.

It is an amenable number.

11189868 is an abundant number, since it is smaller than the sum of its proper divisors (16055700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11189868 is a wasteful number, since it uses less digits than its factorization.

11189868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40573 (or 40571 counting only the distinct ones).

The product of its digits is 27648, while the sum is 42.

The square root of 11189868 is about 3345.1260065953. The cubic root of 11189868 is about 223.6703004640.

The spelling of 11189868 in words is "eleven million, one hundred eighty-nine thousand, eight hundred sixty-eight".