85305290 has 32 divisors (see below), whose sum is σ = 175803264. Its totient is φ = 29194560.

The previous prime is 85305289. The next prime is 85305299. The reversal of 85305290 is 9250358.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85305299) 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, 75812 + ... + 76928.

It is an arithmetic number, because the mean of its divisors is an integer number (5493852).

Almost surely, 2^85305290 is an apocalyptic number.

85305290 is an abundant number, since it is smaller than the sum of its proper divisors (90497974).

85305290 is a wasteful number, since it uses less digits than its factorization.

85305290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 85305290 is about 9236.0862923643. The cubic root of 85305290 is about 440.2087336069.

The spelling of 85305290 in words is "eighty-five million, three hundred five thousand, two hundred ninety".