128091594 has 16 divisors (see below), whose sum is σ = 257756832. Its totient is φ = 42434928.

The previous prime is 128091581. The next prime is 128091629. The reversal of 128091594 is 495190821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64509 + ... + 66464.

It is an arithmetic number, because the mean of its divisors is an integer number (16109802).

Almost surely, 2^128091594 is an apocalyptic number.

128091594 is an abundant number, since it is smaller than the sum of its proper divisors (129665238).

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

128091594 is a wasteful number, since it uses less digits than its factorization.

128091594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131141.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 128091594 is about 11317.7556962500. The cubic root of 128091594 is about 504.0886008886.

The spelling of 128091594 in words is "one hundred twenty-eight million, ninety-one thousand, five hundred ninety-four".