128872759 has 4 divisors (see below), whose sum is σ = 128980216. Its totient is φ = 128765304.

The previous prime is 128872753. The next prime is 128872769. The reversal of 128872759 is 957278821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 957278821 = 191 ⋅5011931.

It is a cyclic number.

It is not a de Polignac number, because 128872759 - 2¹⁷ = 128741687 is a prime.

It is a super-3 number, since 3×128872759³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128872753) 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 3 ways as a sum of consecutive naturals, for example, 51909 + ... + 54334.

It is an arithmetic number, because the mean of its divisors is an integer number (32245054).

Almost surely, 2^128872759 is an apocalyptic number.

128872759 is a deficient number, since it is larger than the sum of its proper divisors (107457).

128872759 is a wasteful number, since it uses less digits than its factorization.

128872759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107456.

The product of its digits is 564480, while the sum is 49.

The square root of 128872759 is about 11352.2138369571. The cubic root of 128872759 is about 505.1112508549. Note that the first 3 decimals are identical.

It can be divided in two parts, 1288 and 72759, that added together give a palindrome (74047).

The spelling of 128872759 in words is "one hundred twenty-eight million, eight hundred seventy-two thousand, seven hundred fifty-nine".