57820838 has 32 divisors (see below), whose sum is σ = 95904000. Its totient is φ = 26036640.

The previous prime is 57820837. The next prime is 57820849. The reversal of 57820838 is 83802875.

57820838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 57820795 and 57820804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57820837) 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, 77873 + ... + 78611.

It is an arithmetic number, because the mean of its divisors is an integer number (2997000).

Almost surely, 2^57820838 is an apocalyptic number.

57820838 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

57820838 is a deficient number, since it is larger than the sum of its proper divisors (38083162).

57820838 is a wasteful number, since it uses less digits than its factorization.

57820838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 57820838 is about 7604.0014466069. The cubic root of 57820838 is about 386.6886816967.

The spelling of 57820838 in words is "fifty-seven million, eight hundred twenty thousand, eight hundred thirty-eight".