11543688 has 64 divisors (see below), whose sum is σ = 34540800. Its totient is φ = 3551040.

The previous prime is 11543683. The next prime is 11543713. The reversal of 11543688 is 88634511.

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

It is not an unprimeable number, because it can be changed into a prime (11543681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753 + ... + 4863.

It is an arithmetic number, because the mean of its divisors is an integer number (539700).

Almost surely, 2^11543688 is an apocalyptic number.

11543688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11543688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17270400).

11543688 is an abundant number, since it is smaller than the sum of its proper divisors (22997112).

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

11543688 is a wasteful number, since it uses less digits than its factorization.

11543688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139 (or 4129 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 11543688 is about 3397.6003296444. The cubic root of 11543688 is about 226.0033413764.

The spelling of 11543688 in words is "eleven million, five hundred forty-three thousand, six hundred eighty-eight".