128582563928 has 32 divisors (see below), whose sum is σ = 296728995360. Its totient is φ = 50867827200.

The previous prime is 128582563861. The next prime is 128582563939. The reversal of 128582563928 is 829365285821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88311473 + ... + 88312928.

It is an arithmetic number, because the mean of its divisors is an integer number (9272781105).

Almost surely, 2^128582563928 is an apocalyptic number.

It is an amenable number.

128582563928 is an abundant number, since it is smaller than the sum of its proper divisors (168146431432).

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

128582563928 is a wasteful number, since it uses less digits than its factorization.

128582563928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176624427 (or 176624423 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 59.

The spelling of 128582563928 in words is "one hundred twenty-eight billion, five hundred eighty-two million, five hundred sixty-three thousand, nine hundred twenty-eight".