57812838 has 8 divisors (see below), whose sum is σ = 115625688. Its totient is φ = 19270944.

The previous prime is 57812809. The next prime is 57812857. The reversal of 57812838 is 83821875.

It is a happy number.

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

57812838 is an admirable number.

It is a super-2 number, since 2×57812838² = 6684648475228488, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57812838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4817731 + ... + 4817742.

It is an arithmetic number, because the mean of its divisors is an integer number (14453211).

Almost surely, 2^57812838 is an apocalyptic number.

57812838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57812838 is a wasteful number, since it uses less digits than its factorization.

57812838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9635478.

The product of its digits is 107520, while the sum is 42.

The square root of 57812838 is about 7603.4753895834. The cubic root of 57812838 is about 386.6708469954.

The spelling of 57812838 in words is "fifty-seven million, eight hundred twelve thousand, eight hundred thirty-eight".