128830875 has 32 divisors (see below), whose sum is σ = 215115264. Its totient is φ = 68472800.

The previous prime is 128830873. The next prime is 128830927. The reversal of 128830875 is 578038821.

It is a happy number.

It is not a de Polignac number, because 128830875 - 2¹ = 128830873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128830873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188284 + ... + 188966.

It is an arithmetic number, because the mean of its divisors is an integer number (6722352).

Almost surely, 2^128830875 is an apocalyptic number.

128830875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128830875 is a deficient number, since it is larger than the sum of its proper divisors (86284389).

128830875 is an equidigital number, since it uses as much as digits as its factorization.

128830875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 128830875 is about 11350.3689367351. The cubic root of 128830875 is about 505.0565240786.

The spelling of 128830875 in words is "one hundred twenty-eight million, eight hundred thirty thousand, eight hundred seventy-five".