57428507 has 8 divisors (see below), whose sum is σ = 60637200. Its totient is φ = 54238464.

The previous prime is 57428491. The next prime is 57428513. The reversal of 57428507 is 70582475.

57428507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57428507 - 2⁴ = 57428491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57428537) 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, 1919 + ... + 10887.

It is an arithmetic number, because the mean of its divisors is an integer number (7579650).

Almost surely, 2^57428507 is an apocalyptic number.

57428507 is a deficient number, since it is larger than the sum of its proper divisors (3208693).

57428507 is a wasteful number, since it uses less digits than its factorization.

57428507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9325.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 57428507 is about 7578.1598689919. The cubic root of 57428507 is about 385.8120981346.

The spelling of 57428507 in words is "fifty-seven million, four hundred twenty-eight thousand, five hundred seven".