85128195 has 16 divisors (see below), whose sum is σ = 140902560. Its totient is φ = 43835904.

The previous prime is 85128191. The next prime is 85128269. The reversal of 85128195 is 59182158.

It is not a de Polignac number, because 85128195 - 2² = 85128191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85128191) 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 15 ways as a sum of consecutive naturals, for example, 97414 + ... + 98283.

It is an arithmetic number, because the mean of its divisors is an integer number (8806410).

Almost surely, 2^85128195 is an apocalyptic number.

85128195 is a deficient number, since it is larger than the sum of its proper divisors (55774365).

85128195 is a wasteful number, since it uses less digits than its factorization.

85128195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195734.

The product of its digits is 28800, while the sum is 39.

The square root of 85128195 is about 9226.4941879351. The cubic root of 85128195 is about 439.9038960217.

The spelling of 85128195 in words is "eighty-five million, one hundred twenty-eight thousand, one hundred ninety-five".