52885728 has 144 divisors (see below), whose sum is σ = 176772960. Its totient is φ = 14681088.

The previous prime is 52885711. The next prime is 52885739. The reversal of 52885728 is 82758825.

52885728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 74238 + ... + 74946.

It is an arithmetic number, because the mean of its divisors is an integer number (1227590).

Almost surely, 2^52885728 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 52885728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88386480).

52885728 is an abundant number, since it is smaller than the sum of its proper divisors (123887232).

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

52885728 is a wasteful number, since it uses less digits than its factorization.

52885728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 758 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 52885728 is about 7272.2574211864. The cubic root of 52885728 is about 375.3584199845.

The spelling of 52885728 in words is "fifty-two million, eight hundred eighty-five thousand, seven hundred twenty-eight".