180128112 has 20 divisors (see below), whose sum is σ = 465331080. Its totient is φ = 60042688.

The previous prime is 180128087. The next prime is 180128131. The reversal of 180128112 is 211821081.

It is a super-3 number, since 3×180128112³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876287 + ... + 1876382.

It is an arithmetic number, because the mean of its divisors is an integer number (23266554).

Almost surely, 2^180128112 is an apocalyptic number.

180128112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180128112 is an abundant number, since it is smaller than the sum of its proper divisors (285202968).

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

180128112 is a wasteful number, since it uses less digits than its factorization.

180128112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752680 (or 3752674 counting only the distinct ones).

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

The square root of 180128112 is about 13421.1814681123. The cubic root of 180128112 is about 564.7555389034.

Adding to 180128112 its reverse (211821081), we get a palindrome (391949193).

The spelling of 180128112 in words is "one hundred eighty million, one hundred twenty-eight thousand, one hundred twelve".