128528080 has 40 divisors (see below), whose sum is σ = 305194752. Its totient is φ = 50315904.

The previous prime is 128528063. The next prime is 128528089. The reversal of 128528080 is 80825821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128528089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13332 + ... + 20851.

Almost surely, 2^128528080 is an apocalyptic number.

128528080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128528080 is an abundant number, since it is smaller than the sum of its proper divisors (176666672).

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

128528080 is a wasteful number, since it uses less digits than its factorization.

128528080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34243 (or 34237 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 128528080 is about 11337.0225368039. The cubic root of 128528080 is about 504.6605306033.

The spelling of 128528080 in words is "one hundred twenty-eight million, five hundred twenty-eight thousand, eighty".