57881628 has 144 divisors (see below), whose sum is σ = 178074624. Its totient is φ = 16096320.

The previous prime is 57881623. The next prime is 57881633. The reversal of 57881628 is 82618875.

57881628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (57881623) and next prime (57881633).

Its product of digits (215040) is a multiple of the sum of its prime divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57881623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 319698 + ... + 319878.

Almost surely, 2^57881628 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 57881628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89037312).

57881628 is an abundant number, since it is smaller than the sum of its proper divisors (120192996).

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

57881628 is a wasteful number, since it uses less digits than its factorization.

57881628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 240 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 57881628 is about 7607.9976340690. The cubic root of 57881628 is about 386.8241494198.

The spelling of 57881628 in words is "fifty-seven million, eight hundred eighty-one thousand, six hundred twenty-eight".