128704 has 14 divisors (see below), whose sum is σ = 255524. Its totient is φ = 64320.

The previous prime is 128693. The next prime is 128717. The reversal of 128704 is 407821.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 942 + ... + 1069.

2¹²⁸⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

128704 is a deficient number, since it is larger than the sum of its proper divisors (126820).

128704 is an equidigital number, since it uses as much as digits as its factorization.

128704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 128704 is about 358.7533971965. The cubic root of 128704 is about 50.4890673324.

The spelling of 128704 in words is "one hundred twenty-eight thousand, seven hundred four".