128830320 has 60 divisors (see below), whose sum is σ = 432657576. Its totient is φ = 34354560.

The previous prime is 128830319. The next prime is 128830357. The reversal of 128830320 is 23038821.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88746 + ... + 90185.

Almost surely, 2^128830320 is an apocalyptic number.

128830320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128830320 is an abundant number, since it is smaller than the sum of its proper divisors (303827256).

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

128830320 is a wasteful number, since it uses less digits than its factorization.

128830320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178950 (or 178941 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 128830320 is about 11350.3444881642. The cubic root of 128830320 is about 505.0557988208.

The spelling of 128830320 in words is "one hundred twenty-eight million, eight hundred thirty thousand, three hundred twenty".