128190112 has 24 divisors (see below), whose sum is σ = 265658400. Its totient is φ = 60721344.

The previous prime is 128190079. The next prime is 128190113. The reversal of 128190112 is 211091821.

It is not an unprimeable number, because it can be changed into a prime (128190113) 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, 104812 + ... + 106027.

It is an arithmetic number, because the mean of its divisors is an integer number (11069100).

Almost surely, 2^128190112 is an apocalyptic number.

It is an amenable number.

128190112 is an abundant number, since it is smaller than the sum of its proper divisors (137468288).

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

128190112 is a wasteful number, since it uses less digits than its factorization.

128190112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210868 (or 210860 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 128190112 is about 11322.1072243642. The cubic root of 128190112 is about 504.2178028986.

The spelling of 128190112 in words is "one hundred twenty-eight million, one hundred ninety thousand, one hundred twelve".