12239712 has 36 divisors (see below), whose sum is σ = 34807500. Its totient is φ = 4079808.

The previous prime is 12239701. The next prime is 12239729. The reversal of 12239712 is 21793221.

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

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 5 ways as a sum of consecutive naturals, for example, 20962 + ... + 21537.

It is an arithmetic number, because the mean of its divisors is an integer number (966875).

Almost surely, 2^12239712 is an apocalyptic number.

12239712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12239712 is an abundant number, since it is smaller than the sum of its proper divisors (22567788).

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

12239712 is a wasteful number, since it uses less digits than its factorization.

12239712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42515 (or 42504 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12239712 is about 3498.5299770046. The cubic root of 12239712 is about 230.4572629659.

The spelling of 12239712 in words is "twelve million, two hundred thirty-nine thousand, seven hundred twelve".