128813800 has 96 divisors (see below), whose sum is σ = 320604480. Its totient is φ = 48012800.

The previous prime is 128813779. The next prime is 128813801. The reversal of 128813800 is 8318821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128813801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188259 + ... + 188941.

It is an arithmetic number, because the mean of its divisors is an integer number (3339630).

Almost surely, 2^128813800 is an apocalyptic number.

128813800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128813800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160302240).

128813800 is an abundant number, since it is smaller than the sum of its proper divisors (191790680).

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

128813800 is a wasteful number, since it uses less digits than its factorization.

128813800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 128813800 is about 11349.6167336170. The cubic root of 128813800 is about 505.0342100146.

The spelling of 128813800 in words is "one hundred twenty-eight million, eight hundred thirteen thousand, eight hundred".