85929728 has 18 divisors (see below), whose sum is σ = 171524304. Its totient is φ = 42964736.

The previous prime is 85929719. The next prime is 85929743. The reversal of 85929728 is 82792958.

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, 167576 + ... + 168087.

It is an arithmetic number, because the mean of its divisors is an integer number (9529128).

Almost surely, 2^85929728 is an apocalyptic number.

It is an amenable number.

85929728 is a deficient number, since it is larger than the sum of its proper divisors (85594576).

85929728 is an equidigital number, since it uses as much as digits as its factorization.

85929728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335679 (or 335665 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 85929728 is about 9269.8289088850. The cubic root of 85929728 is about 441.2802383063.

The spelling of 85929728 in words is "eighty-five million, nine hundred twenty-nine thousand, seven hundred twenty-eight".