128080080 has 60 divisors (see below), whose sum is σ = 430138020. Its totient is φ = 34154496.

The previous prime is 128080079. The next prime is 128080103. The reversal of 128080080 is 80080821.

It can be written as a sum of positive squares in 2 ways, for example, as 47941776 + 80138304 = 6924^2 + 8952^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88225 + ... + 89664.

It is an arithmetic number, because the mean of its divisors is an integer number (7168967).

Almost surely, 2^128080080 is an apocalyptic number.

128080080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128080080 is an abundant number, since it is smaller than the sum of its proper divisors (302057940).

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

128080080 is a wasteful number, since it uses less digits than its factorization.

128080080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177908 (or 177899 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 128080080 is about 11317.2470150651. The cubic root of 128080080 is about 504.0734964624.

The spelling of 128080080 in words is "one hundred twenty-eight million, eighty thousand, eighty".