85711872 has 44 divisors (see below), whose sum is σ = 228461576. Its totient is φ = 28569600.

The previous prime is 85711817. The next prime is 85711877. The reversal of 85711872 is 27811758.

It is a self number, because there is not a number n which added to its sum of digits gives 85711872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85711877) by changing a digit.

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, 10879 + ... + 17022.

Almost surely, 2^85711872 is an apocalyptic number.

It is an amenable number.

85711872 is an abundant number, since it is smaller than the sum of its proper divisors (142749704).

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

85711872 is a wasteful number, since it uses less digits than its factorization.

85711872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27924 (or 27906 counting only the distinct ones).

The product of its digits is 31360, while the sum is 39.

The square root of 85711872 is about 9258.0706413378. The cubic root of 85711872 is about 440.9069995836.

The spelling of 85711872 in words is "eighty-five million, seven hundred eleven thousand, eight hundred seventy-two".