85856728 has 8 divisors (see below), whose sum is σ = 160981380. Its totient is φ = 42928360.

The previous prime is 85856717. The next prime is 85856773. The reversal of 85856728 is 82765858.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5366038 + ... + 5366053.

Almost surely, 2^85856728 is an apocalyptic number.

It is an amenable number.

85856728 is a deficient number, since it is larger than the sum of its proper divisors (75124652).

85856728 is a wasteful number, since it uses less digits than its factorization.

85856728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10732097 (or 10732093 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 49.

The square root of 85856728 is about 9265.8905670205. The cubic root of 85856728 is about 441.1552424344.

The spelling of 85856728 in words is "eighty-five million, eight hundred fifty-six thousand, seven hundred twenty-eight".