12739328 has 36 divisors (see below), whose sum is σ = 29065680. Its totient is φ = 5458944.

The previous prime is 12739319. The next prime is 12739343. The reversal of 12739328 is 82393721.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1763 + ... + 5346.

It is an arithmetic number, because the mean of its divisors is an integer number (807380).

Almost surely, 2^12739328 is an apocalyptic number.

It is an amenable number.

12739328 is an abundant number, since it is smaller than the sum of its proper divisors (16326352).

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

12739328 is an frugal number, since it uses more digits than its factorization.

12739328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7132 (or 7118 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 12739328 is about 3569.2195225287. The cubic root of 12739328 is about 233.5512377108.

It can be divided in two parts, 1273 and 9328, that added together give a palindrome (10601).

The spelling of 12739328 in words is "twelve million, seven hundred thirty-nine thousand, three hundred twenty-eight".