85730828 has 12 divisors (see below), whose sum is σ = 150950520. Its totient is φ = 42602112.

The previous prime is 85730809. The next prime is 85730849. The reversal of 85730828 is 82803758.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65093 + ... + 66396.

It is an arithmetic number, because the mean of its divisors is an integer number (12579210).

Almost surely, 2^85730828 is an apocalyptic number.

It is an amenable number.

85730828 is a deficient number, since it is larger than the sum of its proper divisors (65219692).

85730828 is a wasteful number, since it uses less digits than its factorization.

85730828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131656 (or 131654 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 85730828 is about 9259.0943401609. The cubic root of 85730828 is about 440.9395007873.

The spelling of 85730828 in words is "eighty-five million, seven hundred thirty thousand, eight hundred twenty-eight".