180912 has 20 divisors (see below), whose sum is σ = 467480. Its totient is φ = 60288.

The previous prime is 180907. The next prime is 180949. The reversal of 180912 is 219081.

It is a nialpdrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 180912.

It is an unprimeable number.

180912 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1837 + ... + 1932.

It is an arithmetic number, because the mean of its divisors is an integer number (23374).

2¹⁸⁰⁹¹² is an apocalyptic number.

180912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180912 is an abundant number, since it is smaller than the sum of its proper divisors (286568).

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

180912 is a wasteful number, since it uses less digits than its factorization.

180912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780 (or 3774 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 180912 is about 425.3375130411. The cubic root of 180912 is about 56.5573594527.

Adding to 180912 its reverse (219081), we get a palindrome (399993).

The spelling of 180912 in words is "one hundred eighty thousand, nine hundred twelve".