128020488 has 16 divisors (see below), whose sum is σ = 320051280. Its totient is φ = 42673488.

The previous prime is 128020457. The next prime is 128020513. The reversal of 128020488 is 884020821.

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, 2667070 + ... + 2667117.

It is an arithmetic number, because the mean of its divisors is an integer number (20003205).

Almost surely, 2^128020488 is an apocalyptic number.

It is an amenable number.

128020488 is an abundant number, since it is smaller than the sum of its proper divisors (192030792).

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

128020488 is a wasteful number, since it uses less digits than its factorization.

128020488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5334196 (or 5334192 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 128020488 is about 11314.6139129888. The cubic root of 128020488 is about 503.9953073385.

The spelling of 128020488 in words is "one hundred twenty-eight million, twenty thousand, four hundred eighty-eight".