11187688 has 16 divisors (see below), whose sum is σ = 21265380. Its totient is φ = 5516928.

The previous prime is 11187677. The next prime is 11187691. The reversal of 11187688 is 88678111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10381284 + 806404 = 3222^2 + 898^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11187688.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8995 + ... + 10162.

Almost surely, 2^11187688 is an apocalyptic number.

It is an amenable number.

11187688 is a deficient number, since it is larger than the sum of its proper divisors (10077692).

11187688 is a wasteful number, since it uses less digits than its factorization.

11187688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19236 (or 19232 counting only the distinct ones).

The product of its digits is 21504, while the sum is 40.

The square root of 11187688 is about 3344.8001435063. The cubic root of 11187688 is about 223.6557744385.

The spelling of 11187688 in words is "eleven million, one hundred eighty-seven thousand, six hundred eighty-eight".