128088020 has 12 divisors (see below), whose sum is σ = 268984884. Its totient is φ = 51235200.

The previous prime is 128087957. The next prime is 128088031. The reversal of 128088020 is 20880821.

It can be written as a sum of positive squares in 2 ways, for example, as 41113744 + 86974276 = 6412^2 + 9326^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202181 + ... + 3202220.

It is an arithmetic number, because the mean of its divisors is an integer number (22415407).

Almost surely, 2^128088020 is an apocalyptic number.

128088020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128088020 is an abundant number, since it is smaller than the sum of its proper divisors (140896864).

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

128088020 is a wasteful number, since it uses less digits than its factorization.

128088020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404410 (or 6404408 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 128088020 is about 11317.5978016538. The cubic root of 128088020 is about 504.0839125002.

The spelling of 128088020 in words is "one hundred twenty-eight million, eighty-eight thousand, twenty".