128598 has 8 divisors (see below), whose sum is σ = 257208. Its totient is φ = 42864.

The previous prime is 128591. The next prime is 128599. The reversal of 128598 is 895821.

It is a happy number.

128598 is nontrivially palindromic in base 11.

It is a sphenic number, since it is the product of 3 distinct primes.

128598 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128591) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10711 + ... + 10722.

It is an arithmetic number, because the mean of its divisors is an integer number (32151).

2¹²⁸⁵⁹⁸ is an apocalyptic number.

128598 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128598 is a wasteful number, since it uses less digits than its factorization.

128598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21438.

The product of its digits is 5760, while the sum is 33.

The square root of 128598 is about 358.6056329730. The cubic root of 128598 is about 50.4752026738.

The spelling of 128598 in words is "one hundred twenty-eight thousand, five hundred ninety-eight".