128745759 has 16 divisors (see below), whose sum is σ = 178781184. Its totient is φ = 82320000.

The previous prime is 128745733. The next prime is 128745769. The reversal of 128745759 is 957547821.

It is not a de Polignac number, because 128745759 - 2⁹ = 128745247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128745719) 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, 4384 + ... + 16634.

It is an arithmetic number, because the mean of its divisors is an integer number (11173824).

Almost surely, 2^128745759 is an apocalyptic number.

128745759 is a deficient number, since it is larger than the sum of its proper divisors (50035425).

128745759 is a wasteful number, since it uses less digits than its factorization.

128745759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12398.

The product of its digits is 705600, while the sum is 48.

The square root of 128745759 is about 11346.6188355827. The cubic root of 128745759 is about 504.9452726368.

The spelling of 128745759 in words is "one hundred twenty-eight million, seven hundred forty-five thousand, seven hundred fifty-nine".