128557713 has 16 divisors (see below), whose sum is σ = 177255936. Its totient is φ = 82792320.

The previous prime is 128557711. The next prime is 128557717. The reversal of 128557713 is 317755821.

It is not a de Polignac number, because 128557713 - 2¹ = 128557711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128557711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78895 + ... + 80507.

It is an arithmetic number, because the mean of its divisors is an integer number (11078496).

Almost surely, 2^128557713 is an apocalyptic number.

It is an amenable number.

128557713 is a deficient number, since it is larger than the sum of its proper divisors (48698223).

128557713 is a wasteful number, since it uses less digits than its factorization.

128557713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its digits is 58800, while the sum is 39.

The square root of 128557713 is about 11338.3293742950. The cubic root of 128557713 is about 504.6993118988.

The spelling of 128557713 in words is "one hundred twenty-eight million, five hundred fifty-seven thousand, seven hundred thirteen".