57442838 has 8 divisors (see below), whose sum is σ = 86308032. Its totient is φ = 28673496.

The previous prime is 57442829. The next prime is 57442859. The reversal of 57442838 is 83824475.

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

It is a junction number, because it is equal to n+sod(n) for n = 57442795 and 57442804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22445 + ... + 24872.

It is an arithmetic number, because the mean of its divisors is an integer number (10788504).

Almost surely, 2^57442838 is an apocalyptic number.

57442838 is a deficient number, since it is larger than the sum of its proper divisors (28865194).

57442838 is a wasteful number, since it uses less digits than its factorization.

57442838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47926.

The product of its digits is 215040, while the sum is 41.

The square root of 57442838 is about 7579.1053561750. The cubic root of 57442838 is about 385.8441879660.

The spelling of 57442838 in words is "fifty-seven million, four hundred forty-two thousand, eight hundred thirty-eight".