85391022 has 32 divisors (see below), whose sum is σ = 177292800. Its totient is φ = 27385568.

The previous prime is 85391011. The next prime is 85391023. The reversal of 85391022 is 22019358.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85391023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61783 + ... + 63149.

It is an arithmetic number, because the mean of its divisors is an integer number (5540400).

Almost surely, 2^85391022 is an apocalyptic number.

85391022 is an abundant number, since it is smaller than the sum of its proper divisors (91901778).

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

85391022 is a wasteful number, since it uses less digits than its factorization.

85391022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 85391022 is about 9240.7262701586. The cubic root of 85391022 is about 440.3561544733.

The spelling of 85391022 in words is "eighty-five million, three hundred ninety-one thousand, twenty-two".