57881386 has 8 divisors (see below), whose sum is σ = 90597024. Its totient is φ = 27682380.

The previous prime is 57881333. The next prime is 57881389. The reversal of 57881386 is 68318875.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 1258291 = 57881386 / (5 + 7 + 8 + 8 + 1 + 3 + 8 + 6).

It is not an unprimeable number, because it can be changed into a prime (57881389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629100 + ... + 629191.

It is an arithmetic number, because the mean of its divisors is an integer number (11324628).

Almost surely, 2^57881386 is an apocalyptic number.

57881386 is a deficient number, since it is larger than the sum of its proper divisors (32715638).

57881386 is a wasteful number, since it uses less digits than its factorization.

57881386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258316.

The product of its digits is 322560, while the sum is 46.

The square root of 57881386 is about 7607.9817297362. The cubic root of 57881386 is about 386.8236103220.

The spelling of 57881386 in words is "fifty-seven million, eight hundred eighty-one thousand, three hundred eighty-six".