57285918 has 24 divisors (see below), whose sum is σ = 125517600. Its totient is φ = 18880224.

The previous prime is 57285913. The next prime is 57285929. The reversal of 57285918 is 81958275.

It is a happy number.

57285918 is a `hidden beast` number, since 57 + 2 + 8 + 591 + 8 = 666.

It is a super-2 number, since 2×57285918² = 6563352802205448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57285911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16278 + ... + 19481.

It is an arithmetic number, because the mean of its divisors is an integer number (5229900).

Almost surely, 2^57285918 is an apocalyptic number.

57285918 is an abundant number, since it is smaller than the sum of its proper divisors (68231682).

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

57285918 is a wasteful number, since it uses less digits than its factorization.

57285918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35856 (or 35853 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 57285918 is about 7568.7461312955. The cubic root of 57285918 is about 385.4925230827.

The spelling of 57285918 in words is "fifty-seven million, two hundred eighty-five thousand, nine hundred eighteen".