52307728 has 40 divisors (see below), whose sum is σ = 110975040. Its totient is φ = 23687040.

The previous prime is 52307719. The next prime is 52307729. The reversal of 52307728 is 82770325.

It is a junction number, because it is equal to n+sod(n) for n = 52307693 and 52307702.

It is not an unprimeable number, because it can be changed into a prime (52307729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76926 + ... + 77602.

It is an arithmetic number, because the mean of its divisors is an integer number (2774376).

Almost surely, 2^52307728 is an apocalyptic number.

It is an amenable number.

52307728 is an abundant number, since it is smaller than the sum of its proper divisors (58667312).

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

52307728 is a wasteful number, since it uses less digits than its factorization.

52307728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 52307728 is about 7232.4081743220. The cubic root of 52307728 is about 373.9859489321.

It can be divided in two parts, 52307 and 728, that added together give a palindrome (53035).

The spelling of 52307728 in words is "fifty-two million, three hundred seven thousand, seven hundred twenty-eight".