128910084 has 12 divisors (see below), whose sum is σ = 300790224. Its totient is φ = 42970024.

The previous prime is 128910083. The next prime is 128910091. The reversal of 128910084 is 480019821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (128910083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5371242 + ... + 5371265.

It is an arithmetic number, because the mean of its divisors is an integer number (25065852).

Almost surely, 2^128910084 is an apocalyptic number.

It is an amenable number.

128910084 is an abundant number, since it is smaller than the sum of its proper divisors (171880140).

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

128910084 is a wasteful number, since it uses less digits than its factorization.

128910084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10742514 (or 10742512 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 128910084 is about 11353.8576704132. The cubic root of 128910084 is about 505.1600107267.

The spelling of 128910084 in words is "one hundred twenty-eight million, nine hundred ten thousand, eighty-four".