128475568 has 120 divisors (see below), whose sum is σ = 297637200. Its totient is φ = 53319168.

The previous prime is 128475541. The next prime is 128475569. The reversal of 128475568 is 865574821.

It is not an unprimeable number, because it can be changed into a prime (128475569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2177523 + ... + 2177581.

It is an arithmetic number, because the mean of its divisors is an integer number (2480310).

Almost surely, 2^128475568 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 128475568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148818600).

128475568 is an abundant number, since it is smaller than the sum of its proper divisors (169161632).

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

128475568 is a wasteful number, since it uses less digits than its factorization.

128475568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 122 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The square root of 128475568 is about 11334.7063482033. The cubic root of 128475568 is about 504.5917924627.

The spelling of 128475568 in words is "one hundred twenty-eight million, four hundred seventy-five thousand, five hundred sixty-eight".