85072878 has 24 divisors (see below), whose sum is σ = 201081816. Its totient is φ = 25779600.

The previous prime is 85072859. The next prime is 85072901. The reversal of 85072878 is 87827058.

It is a happy number.

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, 214633 + ... + 215028.

It is an arithmetic number, because the mean of its divisors is an integer number (8378409).

Almost surely, 2^85072878 is an apocalyptic number.

85072878 is an abundant number, since it is smaller than the sum of its proper divisors (116008938).

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

85072878 is a wasteful number, since it uses less digits than its factorization.

85072878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429680 (or 429677 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 85072878 is about 9223.4959749544. The cubic root of 85072878 is about 439.8085909877.

The spelling of 85072878 in words is "eighty-five million, seventy-two thousand, eight hundred seventy-eight".