86713728 has 64 divisors (see below), whose sum is σ = 231535920. Its totient is φ = 28753920.

The previous prime is 86713709. The next prime is 86713733. The reversal of 86713728 is 82731768.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 86713728.

It is a congruent 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, 92076 + ... + 93012.

Almost surely, 2^86713728 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 86713728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115767960).

86713728 is an abundant number, since it is smaller than the sum of its proper divisors (144822192).

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

86713728 is a wasteful number, since it uses less digits than its factorization.

86713728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1183 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 86713728 is about 9312.0206185339. The cubic root of 86713728 is about 442.6182185974.

The spelling of 86713728 in words is "eighty-six million, seven hundred thirteen thousand, seven hundred twenty-eight".