128875504 has 60 divisors (see below), whose sum is σ = 271348704. Its totient is φ = 59256832.

The previous prime is 128875501. The next prime is 128875517. The reversal of 128875504 is 405578821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128875501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217032 + ... + 217624.

Almost surely, 2^128875504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128875504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135674352).

128875504 is an abundant number, since it is smaller than the sum of its proper divisors (142473200).

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

128875504 is a wasteful number, since it uses less digits than its factorization.

128875504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 128875504 is about 11352.3347378414. The cubic root of 128875504 is about 505.1148371327.

The spelling of 128875504 in words is "one hundred twenty-eight million, eight hundred seventy-five thousand, five hundred four".