128082885 has 16 divisors (see below), whose sum is σ = 234208896. Its totient is φ = 58552128.

The previous prime is 128082827. The next prime is 128082907. The reversal of 128082885 is 588280821.

It is not a de Polignac number, because 128082885 - 2²⁰ = 127034309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609814 + ... + 610023.

It is an arithmetic number, because the mean of its divisors is an integer number (14638056).

Almost surely, 2^128082885 is an apocalyptic number.

128082885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128082885 is a deficient number, since it is larger than the sum of its proper divisors (106126011).

128082885 is a wasteful number, since it uses less digits than its factorization.

128082885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219852.

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 128082885 is about 11317.3709402847. The cubic root of 128082885 is about 504.0771762327.

The spelling of 128082885 in words is "one hundred twenty-eight million, eighty-two thousand, eight hundred eighty-five".