52261728 has 48 divisors (see below), whose sum is σ = 139527360. Its totient is φ = 17123456.

The previous prime is 52261717. The next prime is 52261733. The reversal of 52261728 is 82716225.

52261728 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 (48).

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 7 ways as a sum of consecutive naturals, for example, 1051 + ... + 10277.

It is an arithmetic number, because the mean of its divisors is an integer number (2906820).

Almost surely, 2^52261728 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 52261728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69763680).

52261728 is an abundant number, since it is smaller than the sum of its proper divisors (87265632).

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

52261728 is a wasteful number, since it uses less digits than its factorization.

52261728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299 (or 9291 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 52261728 is about 7229.2273446061. The cubic root of 52261728 is about 373.8762876404.

The spelling of 52261728 in words is "fifty-two million, two hundred sixty-one thousand, seven hundred twenty-eight".