128508080 has 40 divisors (see below), whose sum is σ = 305737872. Its totient is φ = 50206464.

The previous prime is 128508071. The next prime is 128508101. The reversal of 128508080 is 80805821.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15239 + ... + 22118.

Almost surely, 2^128508080 is an apocalyptic number.

128508080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128508080 is an abundant number, since it is smaller than the sum of its proper divisors (177229792).

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

128508080 is a wasteful number, since it uses less digits than its factorization.

128508080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37413 (or 37407 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 128508080 is about 11336.1404366742. The cubic root of 128508080 is about 504.6343528368.

The spelling of 128508080 in words is "one hundred twenty-eight million, five hundred eight thousand, eighty".