128317558 has 16 divisors (see below), whose sum is σ = 196960896. Its totient is φ = 62674560.

The previous prime is 128317487. The next prime is 128317559. The reversal of 128317558 is 855713821.

It is a self number, because there is not a number n which added to its sum of digits gives 128317558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128317559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23035 + ... + 28057.

It is an arithmetic number, because the mean of its divisors is an integer number (12310056).

Almost surely, 2^128317558 is an apocalyptic number.

128317558 is a deficient number, since it is larger than the sum of its proper divisors (68643338).

128317558 is a wasteful number, since it uses less digits than its factorization.

128317558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5319.

The product of its digits is 67200, while the sum is 40.

The square root of 128317558 is about 11327.7340187700. The cubic root of 128317558 is about 504.3848445344.

The spelling of 128317558 in words is "one hundred twenty-eight million, three hundred seventeen thousand, five hundred fifty-eight".