128803880 has 16 divisors (see below), whose sum is σ = 289808820. Its totient is φ = 51521536.

The previous prime is 128803867. The next prime is 128803897. The reversal of 128803880 is 88308821.

It can be written as a sum of positive squares in 2 ways, for example, as 120077764 + 8726116 = 10958^2 + 2954^2 .

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 3 ways as a sum of consecutive naturals, for example, 1610009 + ... + 1610088.

Almost surely, 2^128803880 is an apocalyptic number.

128803880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128803880 is an abundant number, since it is smaller than the sum of its proper divisors (161004940).

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

128803880 is a wasteful number, since it uses less digits than its factorization.

128803880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220108 (or 3220104 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 128803880 is about 11349.1797060404. The cubic root of 128803880 is about 505.0212453892.

The spelling of 128803880 in words is "one hundred twenty-eight million, eight hundred three thousand, eight hundred eighty".