128642304 has 72 divisors (see below), whose sum is σ = 391303360. Its totient is φ = 36753408.

The previous prime is 128642287. The next prime is 128642317. The reversal of 128642304 is 403246821.

It is a congruent number.

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, 6589 + ... + 17340.

Almost surely, 2^128642304 is an apocalyptic number.

128642304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128642304 is an abundant number, since it is smaller than the sum of its proper divisors (262661056).

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

128642304 is an equidigital number, since it uses as much as digits as its factorization.

128642304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23955 (or 23941 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 128642304 is about 11342.0590723202. The cubic root of 128642304 is about 504.8099850430.

The spelling of 128642304 in words is "one hundred twenty-eight million, six hundred forty-two thousand, three hundred four".