12085812 has 36 divisors (see below), whose sum is σ = 30874116. Its totient is φ = 3985920.

The previous prime is 12085789. The next prime is 12085813. The reversal of 12085812 is 21858021.

It can be written as a sum of positive squares in 2 ways, for example, as 3825936 + 8259876 = 1956^2 + 2874^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12085813) 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 11 ways as a sum of consecutive naturals, for example, 1762 + ... + 5222.

Almost surely, 2^12085812 is an apocalyptic number.

12085812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12085812 is an abundant number, since it is smaller than the sum of its proper divisors (18788304).

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

12085812 is a wasteful number, since it uses less digits than its factorization.

12085812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568 (or 3563 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 12085812 is about 3476.4654463981. The cubic root of 12085812 is about 229.4872762678.

The spelling of 12085812 in words is "twelve million, eighty-five thousand, eight hundred twelve".