86128870 has 16 divisors (see below), whose sum is σ = 155485008. Its totient is φ = 34350880.

The previous prime is 86128853. The next prime is 86128873. The reversal of 86128870 is 7882168.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8941 + ... + 15880.

It is an arithmetic number, because the mean of its divisors is an integer number (9717813).

Almost surely, 2^86128870 is an apocalyptic number.

86128870 is a deficient number, since it is larger than the sum of its proper divisors (69356138).

86128870 is a wasteful number, since it uses less digits than its factorization.

86128870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25175.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 86128870 is about 9280.5640992345. The cubic root of 86128870 is about 441.6208640450.

The spelling of 86128870 in words is "eighty-six million, one hundred twenty-eight thousand, eight hundred seventy".