52640828 has 24 divisors (see below), whose sum is σ = 94453632. Its totient is φ = 25662384.

The previous prime is 52640827. The next prime is 52640839. The reversal of 52640828 is 82804625.

52640828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52640827) by changing a digit.

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, 26651 + ... + 28557.

It is an arithmetic number, because the mean of its divisors is an integer number (3935568).

Almost surely, 2^52640828 is an apocalyptic number.

It is an amenable number.

52640828 is a deficient number, since it is larger than the sum of its proper divisors (41812804).

52640828 is a wasteful number, since it uses less digits than its factorization.

52640828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081 (or 2079 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 52640828 is about 7255.3999200595. The cubic root of 52640828 is about 374.7781277160.

The spelling of 52640828 in words is "fifty-two million, six hundred forty thousand, eight hundred twenty-eight".