85773728 has 48 divisors (see below), whose sum is σ = 173365920. Its totient is φ = 41760000.

The previous prime is 85773719. The next prime is 85773767. The reversal of 85773728 is 82737758.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341603 + ... + 341853.

It is an arithmetic number, because the mean of its divisors is an integer number (3611790).

Almost surely, 2^85773728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85773728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86682960).

85773728 is an abundant number, since it is smaller than the sum of its proper divisors (87592192).

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

85773728 is a wasteful number, since it uses less digits than its factorization.

85773728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 493 counting only the distinct ones).

The product of its digits is 658560, while the sum is 47.

The square root of 85773728 is about 9261.4106916819. The cubic root of 85773728 is about 441.0130377348.

The spelling of 85773728 in words is "eighty-five million, seven hundred seventy-three thousand, seven hundred twenty-eight".