57791928 has 64 divisors (see below), whose sum is σ = 149713920. Its totient is φ = 18576000.

The previous prime is 57791927. The next prime is 57791947. The reversal of 57791928 is 82919775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57791927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133873 + ... + 134303.

It is an arithmetic number, because the mean of its divisors is an integer number (2339280).

Almost surely, 2^57791928 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 57791928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74856960).

57791928 is an abundant number, since it is smaller than the sum of its proper divisors (91921992).

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

57791928 is a wasteful number, since it uses less digits than its factorization.

57791928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 624 counting only the distinct ones).

The product of its digits is 317520, while the sum is 48.

The square root of 57791928 is about 7602.1002361190. The cubic root of 57791928 is about 386.6242237731.

The spelling of 57791928 in words is "fifty-seven million, seven hundred ninety-one thousand, nine hundred twenty-eight".