128258904 has 96 divisors (see below), whose sum is σ = 340320960. Its totient is φ = 40265280.

The previous prime is 128258903. The next prime is 128258939. The reversal of 128258904 is 409852821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128258903) 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 23 ways as a sum of consecutive naturals, for example, 1545247 + ... + 1545329.

It is an arithmetic number, because the mean of its divisors is an integer number (3545010).

Almost surely, 2^128258904 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 128258904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170160480).

128258904 is an abundant number, since it is smaller than the sum of its proper divisors (212062056).

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

128258904 is a wasteful number, since it uses less digits than its factorization.

128258904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 128258904 is about 11325.1447672866. The cubic root of 128258904 is about 504.3079813264.

The spelling of 128258904 in words is "one hundred twenty-eight million, two hundred fifty-eight thousand, nine hundred four".