57428928 has 84 divisors (see below), whose sum is σ = 165826440. Its totient is φ = 19001856.

The previous prime is 57428923. The next prime is 57428929. The reversal of 57428928 is 82982475.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57428923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102826 + ... + 103382.

Almost surely, 2^57428928 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 57428928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82913220).

57428928 is an abundant number, since it is smaller than the sum of its proper divisors (108397512).

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

57428928 is a wasteful number, since it uses less digits than its factorization.

57428928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 741 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 57428928 is about 7578.1876461328. The cubic root of 57428928 is about 385.8130409097.

The spelling of 57428928 in words is "fifty-seven million, four hundred twenty-eight thousand, nine hundred twenty-eight".