12239812 has 24 divisors (see below), whose sum is σ = 23634072. Its totient is φ = 5510400.

The previous prime is 12239809. The next prime is 12239839. The reversal of 12239812 is 21893221.

12239812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 12152196 = 296^2 + 3486^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739 + ... + 5002.

It is an arithmetic number, because the mean of its divisors is an integer number (984753).

Almost surely, 2^12239812 is an apocalyptic number.

It is an amenable number.

12239812 is a deficient number, since it is larger than the sum of its proper divisors (11394260).

12239812 is a wasteful number, since it uses less digits than its factorization.

12239812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799 (or 5797 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 12239812 is about 3498.5442686923. The cubic root of 12239812 is about 230.4578905859.

The spelling of 12239812 in words is "twelve million, two hundred thirty-nine thousand, eight hundred twelve".