128831402328 has 128 divisors (see below), whose sum is σ = 358668933120. Its totient is φ = 38375700480.

The previous prime is 128831402327. The next prime is 128831402377. The reversal of 128831402328 is 823204138821.

It is a self number, because there is not a number n which added to its sum of digits gives 128831402328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128831402327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574251 + ... + 766437.

It is an arithmetic number, because the mean of its divisors is an integer number (2802101040).

Almost surely, 2^128831402328 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 128831402328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179334466560).

128831402328 is an abundant number, since it is smaller than the sum of its proper divisors (229837530792).

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

128831402328 is a wasteful number, since it uses less digits than its factorization.

128831402328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192297 (or 192293 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 128831402328 in words is "one hundred twenty-eight billion, eight hundred thirty-one million, four hundred two thousand, three hundred twenty-eight".