128830185 has 24 divisors (see below), whose sum is σ = 243607104. Its totient is φ = 62462880.

The previous prime is 128830183. The next prime is 128830211. The reversal of 128830185 is 581038821.

It is not a de Polignac number, because 128830185 - 2¹ = 128830183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128830183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129637 + ... + 130626.

It is an arithmetic number, because the mean of its divisors is an integer number (10150296).

Almost surely, 2^128830185 is an apocalyptic number.

128830185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128830185 is a deficient number, since it is larger than the sum of its proper divisors (114776919).

128830185 is a wasteful number, since it uses less digits than its factorization.

128830185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260285 (or 260282 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 128830185 is about 11350.3385412066. The cubic root of 128830185 is about 505.0556224065.

The spelling of 128830185 in words is "one hundred twenty-eight million, eight hundred thirty thousand, one hundred eighty-five".