85120812 has 36 divisors (see below), whose sum is σ = 245905296. Its totient is φ = 24320160.

The previous prime is 85120811. The next prime is 85120837. The reversal of 85120812 is 21802158.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (85120811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168639 + ... + 169142.

Almost surely, 2^85120812 is an apocalyptic number.

It is an amenable number.

85120812 is an abundant number, since it is smaller than the sum of its proper divisors (160784484).

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

85120812 is a wasteful number, since it uses less digits than its factorization.

85120812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337798 (or 337793 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 85120812 is about 9226.0940814626. The cubic root of 85120812 is about 439.8911783224.

The spelling of 85120812 in words is "eighty-five million, one hundred twenty thousand, eight hundred twelve".