57328405 has 8 divisors (see below), whose sum is σ = 68844600. Its totient is φ = 45829056.

The previous prime is 57328399. The next prime is 57328451. The reversal of 57328405 is 50482375.

It is a happy number.

57328405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3129361 + 54199044 = 1769^2 + 7362^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57328405 - 2⁷ = 57328277 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 5191 + ... + 11899.

It is an arithmetic number, because the mean of its divisors is an integer number (8605575).

Almost surely, 2^57328405 is an apocalyptic number.

It is an amenable number.

57328405 is a deficient number, since it is larger than the sum of its proper divisors (11516195).

57328405 is a wasteful number, since it uses less digits than its factorization.

57328405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8423.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 57328405 is about 7571.5523507402. The cubic root of 57328405 is about 385.5878017245.

The spelling of 57328405 in words is "fifty-seven million, three hundred twenty-eight thousand, four hundred five".