128959296 has 56 divisors (see below), whose sum is σ = 344570304. Its totient is φ = 42562560.

The previous prime is 128959277. The next prime is 128959343. The reversal of 128959296 is 692959821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16516 + ... + 23036.

Almost surely, 2^128959296 is an apocalyptic number.

128959296 is a gapful number since it is divisible by the number (16) 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 128959296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172285152).

128959296 is an abundant number, since it is smaller than the sum of its proper divisors (215611008).

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

128959296 is a wasteful number, since it uses less digits than its factorization.

128959296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6639 (or 6629 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 128959296 is about 11356.0246565424. The cubic root of 128959296 is about 505.2242849114.

The spelling of 128959296 in words is "one hundred twenty-eight million, nine hundred fifty-nine thousand, two hundred ninety-six".