128569134 has 8 divisors (see below), whose sum is σ = 257138280. Its totient is φ = 42856376.

The previous prime is 128569099. The next prime is 128569141. The reversal of 128569134 is 431965821.

It is a sphenic number, since it is the product of 3 distinct primes.

128569134 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 128569092 and 128569101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10714089 + ... + 10714100.

It is an arithmetic number, because the mean of its divisors is an integer number (32142285).

Almost surely, 2^128569134 is an apocalyptic number.

128569134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128569134 is a wasteful number, since it uses less digits than its factorization.

128569134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21428194.

The product of its digits is 51840, while the sum is 39.

The square root of 128569134 is about 11338.8330087360. The cubic root of 128569134 is about 504.7142571972.

The spelling of 128569134 in words is "one hundred twenty-eight million, five hundred sixty-nine thousand, one hundred thirty-four".