128803256 has 16 divisors (see below), whose sum is σ = 242282400. Its totient is φ = 64194624.

The previous prime is 128803249. The next prime is 128803267. The reversal of 128803256 is 652308821.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23216 + ... + 28223.

It is an arithmetic number, because the mean of its divisors is an integer number (15142650).

Almost surely, 2^128803256 is an apocalyptic number.

It is an amenable number.

128803256 is a deficient number, since it is larger than the sum of its proper divisors (113479144).

128803256 is a wasteful number, since it uses less digits than its factorization.

128803256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51758 (or 51754 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 128803256 is about 11349.1522150335. The cubic root of 128803256 is about 505.0204298502.

The spelling of 128803256 in words is "one hundred twenty-eight million, eight hundred three thousand, two hundred fifty-six".