12740845 has 16 divisors (see below), whose sum is σ = 16998912. Its totient is φ = 9103680.

The previous prime is 12740809. The next prime is 12740867. The reversal of 12740845 is 54804721.

12740845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12740845 - 2⁹ = 12740333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147 + ... + 5176.

It is an arithmetic number, because the mean of its divisors is an integer number (1062432).

Almost surely, 2^12740845 is an apocalyptic number.

It is an amenable number.

12740845 is a deficient number, since it is larger than the sum of its proper divisors (4258067).

12740845 is a wasteful number, since it uses less digits than its factorization.

12740845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 12740845 is about 3569.4320276481. The cubic root of 12740845 is about 233.5605077750.

The spelling of 12740845 in words is "twelve million, seven hundred forty thousand, eight hundred forty-five".