128859597 has 24 divisors (see below), whose sum is σ = 192137400. Its totient is φ = 83166720.

The previous prime is 128859583. The next prime is 128859607. The reversal of 128859597 is 795958821.

It can be written as a sum of positive squares in 4 ways, for example, as 20304036 + 108555561 = 4506^2 + 10419^2 .

It is not a de Polignac number, because 128859597 - 2⁴ = 128859581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128859517) 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, 49279 + ... + 51827.

It is an arithmetic number, because the mean of its divisors is an integer number (8005725).

Almost surely, 2^128859597 is an apocalyptic number.

It is an amenable number.

128859597 is a deficient number, since it is larger than the sum of its proper divisors (63277803).

128859597 is a wasteful number, since it uses less digits than its factorization.

128859597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733 (or 2730 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 54.

The square root of 128859597 is about 11351.6341114396. The cubic root of 128859597 is about 505.0940543047.

The spelling of 128859597 in words is "one hundred twenty-eight million, eight hundred fifty-nine thousand, five hundred ninety-seven".