86115728 has 10 divisors (see below), whose sum is σ = 166849254. Its totient is φ = 43057856.

The previous prime is 86115719. The next prime is 86115769. The reversal of 86115728 is 82751168.

It can be written as a sum of positive squares in only one way, i.e., 49730704 + 36385024 = 7052^2 + 6032^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86115691 and 86115700.

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, 2691101 + ... + 2691132.

Almost surely, 2^86115728 is an apocalyptic number.

It is an amenable number.

86115728 is a deficient number, since it is larger than the sum of its proper divisors (80733526).

86115728 is a wasteful number, since it uses less digits than its factorization.

86115728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5382241 (or 5382235 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The square root of 86115728 is about 9279.8560333660. The cubic root of 86115728 is about 441.5984012842.

The spelling of 86115728 in words is "eighty-six million, one hundred fifteen thousand, seven hundred twenty-eight".