12506739 has 16 divisors (see below), whose sum is σ = 19119360. Its totient is φ = 7123680.

The previous prime is 12506737. The next prime is 12506759. The reversal of 12506739 is 93760521.

12506739 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12506739 - 2¹ = 12506737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12506737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7404 + ... + 8934.

It is an arithmetic number, because the mean of its divisors is an integer number (1194960).

Almost surely, 2^12506739 is an apocalyptic number.

12506739 is a deficient number, since it is larger than the sum of its proper divisors (6612621).

12506739 is a wasteful number, since it uses less digits than its factorization.

12506739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 12506739 is about 3536.4868160365. The cubic root of 12506739 is about 232.1211404109.

The spelling of 12506739 in words is "twelve million, five hundred six thousand, seven hundred thirty-nine".