128803900 has 36 divisors (see below), whose sum is σ = 295949808. Its totient is φ = 48490240.

The previous prime is 128803897. The next prime is 128803957. The reversal of 128803900 is 9308821.

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, 36184 + ... + 39583.

It is an arithmetic number, because the mean of its divisors is an integer number (8220828).

Almost surely, 2^128803900 is an apocalyptic number.

128803900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128803900 is an abundant number, since it is smaller than the sum of its proper divisors (167145908).

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

128803900 is a wasteful number, since it uses less digits than its factorization.

128803900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75798 (or 75791 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 128803900 is about 11349.1805871613. The cubic root of 128803900 is about 505.0212715283.

The spelling of 128803900 in words is "one hundred twenty-eight million, eight hundred three thousand, nine hundred".