85219218 has 48 divisors (see below), whose sum is σ = 222131520. Its totient is φ = 23066208.

The previous prime is 85219193. The next prime is 85219229. The reversal of 85219218 is 81291258.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15405 + ... + 20192.

It is an arithmetic number, because the mean of its divisors is an integer number (4627740).

Almost surely, 2^85219218 is an apocalyptic number.

85219218 is an abundant number, since it is smaller than the sum of its proper divisors (136912302).

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

85219218 is a wasteful number, since it uses less digits than its factorization.

85219218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35631 (or 35628 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 85219218 is about 9231.4255670508. The cubic root of 85219218 is about 440.0606286978.

The spelling of 85219218 in words is "eighty-five million, two hundred nineteen thousand, two hundred eighteen".