128904095 has 4 divisors (see below), whose sum is σ = 154684920. Its totient is φ = 103123272.

The previous prime is 128904089. The next prime is 128904143. The reversal of 128904095 is 590409821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128904095 - 2⁴ = 128904079 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12890405 + ... + 12890414.

It is an arithmetic number, because the mean of its divisors is an integer number (38671230).

Almost surely, 2^128904095 is an apocalyptic number.

128904095 is a deficient number, since it is larger than the sum of its proper divisors (25780825).

128904095 is an equidigital number, since it uses as much as digits as its factorization.

128904095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25780824.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 128904095 is about 11353.5939243924. The cubic root of 128904095 is about 505.1521875731.

The spelling of 128904095 in words is "one hundred twenty-eight million, nine hundred four thousand, ninety-five".