12738847 has 4 divisors (see below), whose sum is σ = 13896936. Its totient is φ = 11580760.

The previous prime is 12738839. The next prime is 12738851. The reversal of 12738847 is 74883721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12738847 - 2³ = 12738839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12738877) by changing a digit.

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, 579028 + ... + 579049.

It is an arithmetic number, because the mean of its divisors is an integer number (3474234).

Almost surely, 2^12738847 is an apocalyptic number.

12738847 is a deficient number, since it is larger than the sum of its proper divisors (1158089).

12738847 is a wasteful number, since it uses less digits than its factorization.

12738847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158088.

The product of its digits is 75264, while the sum is 40.

The square root of 12738847 is about 3569.1521402148. The cubic root of 12738847 is about 233.5482982685.

The spelling of 12738847 in words is "twelve million, seven hundred thirty-eight thousand, eight hundred forty-seven".