128204875 has 32 divisors (see below), whose sum is σ = 175818240. Its totient is φ = 92901600.

The previous prime is 128204851. The next prime is 128204893. The reversal of 128204875 is 578402821.

It is not a de Polignac number, because 128204875 - 2¹¹ = 128202827 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 53452 + ... + 55798.

It is an arithmetic number, because the mean of its divisors is an integer number (5494320).

Almost surely, 2^128204875 is an apocalyptic number.

128204875 is a deficient number, since it is larger than the sum of its proper divisors (47613365).

128204875 is a wasteful number, since it uses less digits than its factorization.

128204875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404 (or 2394 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 128204875 is about 11322.7591602047. The cubic root of 128204875 is about 504.2371582180.

The spelling of 128204875 in words is "one hundred twenty-eight million, two hundred four thousand, eight hundred seventy-five".