12739648 has 28 divisors (see below), whose sum is σ = 25666192. Its totient is φ = 6272640.

The previous prime is 12739637. The next prime is 12739651. The reversal of 12739648 is 84693721.

It is a self number, because there is not a number n which added to its sum of digits gives 12739648.

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, 2803 + ... + 5773.

Almost surely, 2^12739648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12739648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12833096).

12739648 is an abundant number, since it is smaller than the sum of its proper divisors (12926544).

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

12739648 is an equidigital number, since it uses as much as digits as its factorization.

12739648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050 (or 3040 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 12739648 is about 3569.2643499747. The cubic root of 12739648 is about 233.5531932240.

The spelling of 12739648 in words is "twelve million, seven hundred thirty-nine thousand, six hundred forty-eight".