57528077828 has 24 divisors (see below), whose sum is σ = 108425451288. Its totient is φ = 26549669376.

The previous prime is 57528077821. The next prime is 57528077869. The reversal of 57528077828 is 82877082575.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3429039364 + 54099038464 = 58558^2 + 232592^2 .

It is not an unprimeable number, because it can be changed into a prime (57528077821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091900 + ... + 1143372.

It is an arithmetic number, because the mean of its divisors is an integer number (4517727137).

Almost surely, 2^57528077828 is an apocalyptic number.

It is an amenable number.

57528077828 is a deficient number, since it is larger than the sum of its proper divisors (50897373460).

57528077828 is a wasteful number, since it uses less digits than its factorization.

57528077828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72983 (or 72981 counting only the distinct ones).

The product of its (nonzero) digits is 17561600, while the sum is 59.

The spelling of 57528077828 in words is "fifty-seven billion, five hundred twenty-eight million, seventy-seven thousand, eight hundred twenty-eight".