12039556 has 12 divisors (see below), whose sum is σ = 21094668. Its totient is φ = 6012512.

The previous prime is 12039539. The next prime is 12039569. The reversal of 12039556 is 65593021.

12039556 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 2 ways, for example, as 4910656 + 7128900 = 2216^2 + 2670^2 .

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, 3930 + ... + 6286.

It is an arithmetic number, because the mean of its divisors is an integer number (1757889).

Almost surely, 2^12039556 is an apocalyptic number.

It is an amenable number.

12039556 is a deficient number, since it is larger than the sum of its proper divisors (9055112).

12039556 is a wasteful number, since it uses less digits than its factorization.

12039556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638 (or 3636 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 12039556 is about 3469.8063346533. The cubic root of 12039556 is about 229.1941299245.

The spelling of 12039556 in words is "twelve million, thirty-nine thousand, five hundred fifty-six".