57427788 has 24 divisors (see below), whose sum is σ = 146180160. Its totient is φ = 17402320.

The previous prime is 57427787. The next prime is 57427807. The reversal of 57427788 is 88772475.

It is a happy number.

57427788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (57427781) 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 7 ways as a sum of consecutive naturals, for example, 217398 + ... + 217661.

It is an arithmetic number, because the mean of its divisors is an integer number (6090840).

Almost surely, 2^57427788 is an apocalyptic number.

It is an amenable number.

57427788 is an abundant number, since it is smaller than the sum of its proper divisors (88752372).

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

57427788 is a wasteful number, since it uses less digits than its factorization.

57427788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435077 (or 435075 counting only the distinct ones).

The product of its digits is 878080, while the sum is 48.

The square root of 57427788 is about 7578.1124298865. The cubic root of 57427788 is about 385.8104880164.

It can be divided in two parts, 5742 and 7788, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 57427788 in words is "fifty-seven million, four hundred twenty-seven thousand, seven hundred eighty-eight".