128972524 has 12 divisors (see below), whose sum is σ = 232982848. Its totient is φ = 62406000.

The previous prime is 128972449. The next prime is 128972527. The reversal of 128972524 is 425279821.

It is not an unprimeable number, because it can be changed into a prime (128972527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519927 + ... + 520174.

Almost surely, 2^128972524 is an apocalyptic number.

It is an amenable number.

128972524 is a deficient number, since it is larger than the sum of its proper divisors (104010324).

128972524 is a wasteful number, since it uses less digits than its factorization.

128972524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040136 (or 1040134 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 128972524 is about 11356.6070637317. The cubic root of 128972524 is about 505.2415587814.

The spelling of 128972524 in words is "one hundred twenty-eight million, nine hundred seventy-two thousand, five hundred twenty-four".