57427320 has 64 divisors (see below), whose sum is σ = 179781120. Its totient is φ = 14647424.

The previous prime is 57427319. The next prime is 57427327. The reversal of 57427320 is 2372475.

57427320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57427327) 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 15 ways as a sum of consecutive naturals, for example, 7644 + ... + 13163.

It is an arithmetic number, because the mean of its divisors is an integer number (2809080).

Almost surely, 2^57427320 is an apocalyptic number.

It is an amenable number.

57427320 is an abundant number, since it is smaller than the sum of its proper divisors (122353800).

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

57427320 is a wasteful number, since it uses less digits than its factorization.

57427320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20844 (or 20840 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 57427320 is about 7578.0815514218. The cubic root of 57427320 is about 385.8094399767.

Adding to 57427320 its reverse (2372475), we get a palindrome (59799795).

The spelling of 57427320 in words is "fifty-seven million, four hundred twenty-seven thousand, three hundred twenty".