128803312 has 80 divisors (see below), whose sum is σ = 290552832. Its totient is φ = 54728960.

The previous prime is 128803309. The next prime is 128803331. The reversal of 128803312 is 213308821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189918 + ... + 190594.

Almost surely, 2^128803312 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 128803312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145276416).

128803312 is an abundant number, since it is smaller than the sum of its proper divisors (161749520).

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

128803312 is a wasteful number, since it uses less digits than its factorization.

128803312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 128803312 is about 11349.1546821779. The cubic root of 128803312 is about 505.0205030397.

The spelling of 128803312 in words is "one hundred twenty-eight million, eight hundred three thousand, three hundred twelve".