128589334 has 4 divisors (see below), whose sum is σ = 192884004. Its totient is φ = 64294666.

The previous prime is 128589301. The next prime is 128589341. The reversal of 128589334 is 433985821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 433985821 = 19 ⋅22841359.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32147332 + ... + 32147335.

It is an arithmetic number, because the mean of its divisors is an integer number (48221001).

Almost surely, 2^128589334 is an apocalyptic number.

128589334 is a deficient number, since it is larger than the sum of its proper divisors (64294670).

128589334 is an equidigital number, since it uses as much as digits as its factorization.

128589334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64294669.

The product of its digits is 207360, while the sum is 43.

The square root of 128589334 is about 11339.7237179748. The cubic root of 128589334 is about 504.7406883574.

The spelling of 128589334 in words is "one hundred twenty-eight million, five hundred eighty-nine thousand, three hundred thirty-four".