128959712 has 48 divisors (see below), whose sum is σ = 302787072. Its totient is φ = 52863360.

The previous prime is 128959711. The next prime is 128959751. The reversal of 128959712 is 217959821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128959711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7364 + ... + 17667.

It is an arithmetic number, because the mean of its divisors is an integer number (6308064).

Almost surely, 2^128959712 is an apocalyptic number.

It is an amenable number.

128959712 is an abundant number, since it is smaller than the sum of its proper divisors (173827360).

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

128959712 is a wasteful number, since it uses less digits than its factorization.

128959712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25071 (or 25063 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 128959712 is about 11356.0429727965. The cubic root of 128959712 is about 505.2248281657.

The spelling of 128959712 in words is "one hundred twenty-eight million, nine hundred fifty-nine thousand, seven hundred twelve".