57805398 has 36 divisors (see below), whose sum is σ = 145695420. Its totient is φ = 16515576.

The previous prime is 57805357. The next prime is 57805399. The reversal of 57805398 is 89350875.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57805399) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31888 + ... + 33651.

It is an arithmetic number, because the mean of its divisors is an integer number (4047095).

Almost surely, 2^57805398 is an apocalyptic number.

57805398 is an abundant number, since it is smaller than the sum of its proper divisors (87890022).

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

57805398 is a wasteful number, since it uses less digits than its factorization.

57805398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65561 (or 65551 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 57805398 is about 7602.9861238858. The cubic root of 57805398 is about 386.6542592465.

The spelling of 57805398 in words is "fifty-seven million, eight hundred five thousand, three hundred ninety-eight".