128089475 has 36 divisors (see below), whose sum is σ = 173232216. Its totient is φ = 93623040.

The previous prime is 128089459. The next prime is 128089477. The reversal of 128089475 is 574980821.

It is not a de Polignac number, because 128089475 - 2⁴ = 128089459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128089477) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 785744 + ... + 785906.

It is an arithmetic number, because the mean of its divisors is an integer number (4812006).

Almost surely, 2^128089475 is an apocalyptic number.

128089475 is a deficient number, since it is larger than the sum of its proper divisors (45142741).

128089475 is a wasteful number, since it uses less digits than its factorization.

128089475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 128089475 is about 11317.6620818966. The cubic root of 128089475 is about 504.0858211859.

The spelling of 128089475 in words is "one hundred twenty-eight million, eighty-nine thousand, four hundred seventy-five".