128972559 has 16 divisors (see below), whose sum is σ = 176578560. Its totient is φ = 83694240.

The previous prime is 128972533. The next prime is 128972567. The reversal of 128972559 is 955279821.

It is not a de Polignac number, because 128972559 - 2⁵ = 128972527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128972579) 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, 24537 + ... + 29325.

It is an arithmetic number, because the mean of its divisors is an integer number (11036160).

Almost surely, 2^128972559 is an apocalyptic number.

128972559 is a deficient number, since it is larger than the sum of its proper divisors (47606001).

128972559 is a wasteful number, since it uses less digits than its factorization.

128972559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030.

The product of its digits is 453600, while the sum is 48.

The square root of 128972559 is about 11356.6086046848. The cubic root of 128972559 is about 505.2416044848.

The spelling of 128972559 in words is "one hundred twenty-eight million, nine hundred seventy-two thousand, five hundred fifty-nine".