128520304 has 40 divisors (see below), whose sum is σ = 272629872. Its totient is φ = 58206720.

The previous prime is 128520269. The next prime is 128520307. The reversal of 128520304 is 403025821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128520307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53922 + ... + 56254.

Almost surely, 2^128520304 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 128520304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136314936).

128520304 is an abundant number, since it is smaller than the sum of its proper divisors (144109568).

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

128520304 is a wasteful number, since it uses less digits than its factorization.

128520304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665 (or 2659 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 128520304 is about 11336.6795844286. The cubic root of 128520304 is about 504.6503530104.

The spelling of 128520304 in words is "one hundred twenty-eight million, five hundred twenty thousand, three hundred four".