12739712 has 16 divisors (see below), whose sum is σ = 25380150. Its totient is φ = 6369792.

The previous prime is 12739711. The next prime is 12739717. The reversal of 12739712 is 21793721.

It can be written as a sum of positive squares in only one way, i.e., 12559936 + 179776 = 3544^2 + 424^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (12739711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49637 + ... + 49892.

Almost surely, 2^12739712 is an apocalyptic number.

It is an amenable number.

12739712 is a deficient number, since it is larger than the sum of its proper divisors (12640438).

12739712 is an frugal number, since it uses more digits than its factorization.

12739712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99543 (or 99531 counting only the distinct ones).

The product of its digits is 5292, while the sum is 32.

The square root of 12739712 is about 3569.2733153963. The cubic root of 12739712 is about 233.5535843227.

The spelling of 12739712 in words is "twelve million, seven hundred thirty-nine thousand, seven hundred twelve".