12439572 has 12 divisors (see below), whose sum is σ = 29025696. Its totient is φ = 4146520.

The previous prime is 12439561. The next prime is 12439591. The reversal of 12439572 is 27593421.

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

It is a congruent number.

It is an unprimeable number.

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, 518304 + ... + 518327.

It is an arithmetic number, because the mean of its divisors is an integer number (2418808).

Almost surely, 2^12439572 is an apocalyptic number.

12439572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12439572 is an abundant number, since it is smaller than the sum of its proper divisors (16586124).

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

12439572 is a wasteful number, since it uses less digits than its factorization.

12439572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036638 (or 1036636 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 12439572 is about 3526.9777430542. The cubic root of 12439572 is about 231.7048615204.

The spelling of 12439572 in words is "twelve million, four hundred thirty-nine thousand, five hundred seventy-two".