85728822 has 32 divisors (see below), whose sum is σ = 173629440. Its totient is φ = 28217280.

The previous prime is 85728803. The next prime is 85728833. The reversal of 85728822 is 22882758.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273738 + ... + 274050.

It is an arithmetic number, because the mean of its divisors is an integer number (5425920).

Almost surely, 2^85728822 is an apocalyptic number.

85728822 is an abundant number, since it is smaller than the sum of its proper divisors (87900618).

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

85728822 is a wasteful number, since it uses less digits than its factorization.

85728822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its digits is 143360, while the sum is 42.

The square root of 85728822 is about 9258.9860135978. The cubic root of 85728822 is about 440.9360616062.

The spelling of 85728822 in words is "eighty-five million, seven hundred twenty-eight thousand, eight hundred twenty-two".