85123836 has 36 divisors (see below), whose sum is σ = 245914032. Its totient is φ = 24321024.

The previous prime is 85123823. The next prime is 85123867. The reversal of 85123836 is 63832158.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 85123836.

It is a congruent number.

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, 168645 + ... + 169148.

Almost surely, 2^85123836 is an apocalyptic number.

It is an amenable number.

85123836 is an abundant number, since it is smaller than the sum of its proper divisors (160790196).

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

85123836 is a wasteful number, since it uses less digits than its factorization.

85123836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337810 (or 337805 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 85123836 is about 9226.2579630097. The cubic root of 85123836 is about 439.8963874486.

The spelling of 85123836 in words is "eighty-five million, one hundred twenty-three thousand, eight hundred thirty-six".