180439212 has 12 divisors (see below), whose sum is σ = 421024856. Its totient is φ = 60146400.

The previous prime is 180439177. The next prime is 180439213. The reversal of 180439212 is 212934081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 180439212.

It is not an unprimeable number, because it can be changed into a prime (180439213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7518289 + ... + 7518312.

Almost surely, 2^180439212 is an apocalyptic number.

180439212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

180439212 is an abundant number, since it is smaller than the sum of its proper divisors (240585644).

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

180439212 is a wasteful number, since it uses less digits than its factorization.

180439212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15036608 (or 15036606 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 180439212 is about 13432.7663569348. The cubic root of 180439212 is about 565.0804824395.

The spelling of 180439212 in words is "one hundred eighty million, four hundred thirty-nine thousand, two hundred twelve".