11187864 has 24 divisors (see below), whose sum is σ = 30300660. Its totient is φ = 3729264.

The previous prime is 11187859. The next prime is 11187877. The reversal of 11187864 is 46878111.

11187864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×11187864³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77622 + ... + 77765.

Almost surely, 2^11187864 is an apocalyptic number.

It is an amenable number.

11187864 is an abundant number, since it is smaller than the sum of its proper divisors (19112796).

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

11187864 is a wasteful number, since it uses less digits than its factorization.

11187864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155399 (or 155392 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 11187864 is about 3344.8264528971. The cubic root of 11187864 is about 223.6569472518.

The spelling of 11187864 in words is "eleven million, one hundred eighty-seven thousand, eight hundred sixty-four".