57528870 has 64 divisors (see below), whose sum is σ = 162902016. Its totient is φ = 12723840.

The previous prime is 57528847. The next prime is 57528881. The reversal of 57528870 is 7882575.

It is a happy number.

It is a super-3 number, since 3×57528870³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2092 + ... + 10928.

It is an arithmetic number, because the mean of its divisors is an integer number (2545344).

Almost surely, 2^57528870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57528870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81451008).

57528870 is an abundant number, since it is smaller than the sum of its proper divisors (105373146).

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

57528870 is a wasteful number, since it uses less digits than its factorization.

57528870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 57528870 is about 7584.7788365911. The cubic root of 57528870 is about 386.0367178509.

The spelling of 57528870 in words is "fifty-seven million, five hundred twenty-eight thousand, eight hundred seventy".