128819392 has 112 divisors (see below), whose sum is σ = 300837600. Its totient is φ = 54190080.

The previous prime is 128819381. The next prime is 128819393. The reversal of 128819392 is 293918821.

It is not an unprimeable number, because it can be changed into a prime (128819393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458292 + ... + 458572.

It is an arithmetic number, because the mean of its divisors is an integer number (2686050).

Almost surely, 2^128819392 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 128819392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150418800).

128819392 is an abundant number, since it is smaller than the sum of its proper divisors (172018208).

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

128819392 is a wasteful number, since it uses less digits than its factorization.

128819392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 344 counting only the distinct ones).

The product of its digits is 62208, while the sum is 43.

The square root of 128819392 is about 11349.8630828746. The cubic root of 128819392 is about 505.0415180060.

The spelling of 128819392 in words is "one hundred twenty-eight million, eight hundred nineteen thousand, three hundred ninety-two".