11687544 has 64 divisors (see below), whose sum is σ = 35424000. Its totient is φ = 3540960.

The previous prime is 11687521. The next prime is 11687563. The reversal of 11687544 is 44578611.

It is a happy number.

11687544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 11687499 and 11687508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84 + ... + 4835.

It is an arithmetic number, because the mean of its divisors is an integer number (553500).

Almost surely, 2^11687544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11687544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17712000).

11687544 is an abundant number, since it is smaller than the sum of its proper divisors (23736456).

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

11687544 is a wasteful number, since it uses less digits than its factorization.

11687544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945 (or 4935 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 11687544 is about 3418.7050179856. The cubic root of 11687544 is about 226.9382768654.

The spelling of 11687544 in words is "eleven million, six hundred eighty-seven thousand, five hundred forty-four".