11564532 has 60 divisors (see below), whose sum is σ = 34557600. Its totient is φ = 3303504.

The previous prime is 11564513. The next prime is 11564543. The reversal of 11564532 is 23546511.

11564532 is a `hidden beast` number, since 1 + 15 + 645 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11564496 and 11564505.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 282 + ... + 4817.

It is an arithmetic number, because the mean of its divisors is an integer number (575960).

Almost surely, 2^11564532 is an apocalyptic number.

11564532 is a gapful number since it is divisible by the number (12) 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 11564532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17278800).

11564532 is an abundant number, since it is smaller than the sum of its proper divisors (22993068).

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

11564532 is a wasteful number, since it uses less digits than its factorization.

11564532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122 (or 5111 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 11564532 is about 3400.6664052800. Note that the first 3 decimals coincide. The cubic root of 11564532 is about 226.1392881412.

The spelling of 11564532 in words is "eleven million, five hundred sixty-four thousand, five hundred thirty-two".