11687388 has 24 divisors (see below), whose sum is σ = 27326208. Its totient is φ = 3887856.

The previous prime is 11687383. The next prime is 11687393. The reversal of 11687388 is 88378611.

It is an interprime number because it is at equal distance from previous prime (11687383) and next prime (11687393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11687383) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10045 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (1138592).

Almost surely, 2^11687388 is an apocalyptic number.

It is an amenable number.

11687388 is an abundant number, since it is smaller than the sum of its proper divisors (15638820).

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

11687388 is a wasteful number, since it uses less digits than its factorization.

11687388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993 (or 1991 counting only the distinct ones).

The product of its digits is 64512, while the sum is 42.

The square root of 11687388 is about 3418.6822022528. The cubic root of 11687388 is about 226.9372671715.

The spelling of 11687388 in words is "eleven million, six hundred eighty-seven thousand, three hundred eighty-eight".