128928264 has 16 divisors (see below), whose sum is σ = 322320720. Its totient is φ = 42976080.

The previous prime is 128928263. The next prime is 128928343. The reversal of 128928264 is 462829821.

It is not an unprimeable number, because it can be changed into a prime (128928263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2685982 + ... + 2686029.

It is an arithmetic number, because the mean of its divisors is an integer number (20145045).

Almost surely, 2^128928264 is an apocalyptic number.

It is an amenable number.

128928264 is an abundant number, since it is smaller than the sum of its proper divisors (193392456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128928264 is a wasteful number, since it uses less digits than its factorization.

128928264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372020 (or 5372016 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 128928264 is about 11354.6582511320. The cubic root of 128928264 is about 505.1837569354.

The spelling of 128928264 in words is "one hundred twenty-eight million, nine hundred twenty-eight thousand, two hundred sixty-four".