57140928 has 126 divisors (see below), whose sum is σ = 177654204. Its totient is φ = 17551872.

The previous prime is 57140911. The next prime is 57140929. The reversal of 57140928 is 82904175.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 57140892 and 57140901.

It is not an unprimeable number, because it can be changed into a prime (57140929) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 97051 + ... + 97637.

It is an arithmetic number, because the mean of its divisors is an integer number (1409954).

Almost surely, 2^57140928 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 57140928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88827102).

57140928 is an abundant number, since it is smaller than the sum of its proper divisors (120513276).

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

57140928 is a wasteful number, since it uses less digits than its factorization.

57140928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 57140928 is about 7559.1618583015. The cubic root of 57140928 is about 385.1670226004.

The spelling of 57140928 in words is "fifty-seven million, one hundred forty thousand, nine hundred twenty-eight".