57891442 has 24 divisors (see below), whose sum is σ = 106334640. Its totient is φ = 23504040.

The previous prime is 57891433. The next prime is 57891487. The reversal of 57891442 is 24419875.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 57891395 and 57891404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13684 + ... + 17407.

It is an arithmetic number, because the mean of its divisors is an integer number (4430610).

Almost surely, 2^57891442 is an apocalyptic number.

57891442 is a deficient number, since it is larger than the sum of its proper divisors (48443198).

57891442 is a wasteful number, since it uses less digits than its factorization.

57891442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31126 (or 31119 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 57891442 is about 7608.6425859019. The cubic root of 57891442 is about 386.8460105744.

The spelling of 57891442 in words is "fifty-seven million, eight hundred ninety-one thousand, four hundred forty-two".