86128872 has 32 divisors (see below), whose sum is σ = 215793600. Its totient is φ = 28646784.

The previous prime is 86128853. The next prime is 86128873. The reversal of 86128872 is 27882168.

It is not an unprimeable number, because it can be changed into a prime (86128873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8004 + ... + 15372.

It is an arithmetic number, because the mean of its divisors is an integer number (6743550).

Almost surely, 2^86128872 is an apocalyptic number.

It is an amenable number.

86128872 is an abundant number, since it is smaller than the sum of its proper divisors (129664728).

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

86128872 is a wasteful number, since it uses less digits than its factorization.

86128872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7865 (or 7861 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 86128872 is about 9280.5642069866. The cubic root of 86128872 is about 441.6208674633.

The spelling of 86128872 in words is "eighty-six million, one hundred twenty-eight thousand, eight hundred seventy-two".