128304 has 70 divisors (see below), whose sum is σ = 406596. Its totient is φ = 38880.

The previous prime is 128291. The next prime is 128311. The reversal of 128304 is 403821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 11659 + ... + 11669.

2¹²⁸³⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203298).

128304 is an abundant number, since it is smaller than the sum of its proper divisors (278292).

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

128304 is an equidigital number, since it uses as much as digits as its factorization.

128304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37 (or 16 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 128304 is about 358.1954773584. The cubic root of 128304 is about 50.4367079518.

The spelling of 128304 in words is "one hundred twenty-eight thousand, three hundred four".