128112180 has 48 divisors (see below), whose sum is σ = 409960320. Its totient is φ = 29282688.

The previous prime is 128112161. The next prime is 128112191. The reversal of 128112180 is 81211821.

It is a self number, because there is not a number n which added to its sum of digits gives 128112180.

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, 152095 + ... + 152934.

It is an arithmetic number, because the mean of its divisors is an integer number (8540840).

Almost surely, 2^128112180 is an apocalyptic number.

128112180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128112180 is an abundant number, since it is smaller than the sum of its proper divisors (281848140).

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

128112180 is a wasteful number, since it uses less digits than its factorization.

128112180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305048 (or 305046 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 24.

The square root of 128112180 is about 11318.6651156397. The cubic root of 128112180 is about 504.1156039930.

The spelling of 128112180 in words is "one hundred twenty-eight million, one hundred twelve thousand, one hundred eighty".