128597579 has 16 divisors (see below), whose sum is σ = 145843200. Its totient is φ = 112332000.

The previous prime is 128597569. The next prime is 128597597. The reversal of 128597579 is 975795821.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-128597579 is a prime.

It is a super-2 number, since 2×128597579² = 33074674649322482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128597579.

It is not an unprimeable number, because it can be changed into a prime (128597519) 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, 49544 + ... + 52074.

It is an arithmetic number, because the mean of its divisors is an integer number (9115200).

Almost surely, 2^128597579 is an apocalyptic number.

128597579 is a deficient number, since it is larger than the sum of its proper divisors (17245621).

128597579 is a wasteful number, since it uses less digits than its factorization.

128597579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722.

The product of its digits is 1587600, while the sum is 53.

The square root of 128597579 is about 11340.0872571599. The cubic root of 128597579 is about 504.7514759240.

The spelling of 128597579 in words is "one hundred twenty-eight million, five hundred ninety-seven thousand, five hundred seventy-nine".