12638841 has 8 divisors (see below), whose sum is σ = 16893504. Its totient is φ = 8405040.

The previous prime is 12638839. The next prime is 12638849. The reversal of 12638841 is 14883621.

12638841 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12638841 - 2¹ = 12638839 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12638849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3741 + ... + 6266.

It is an arithmetic number, because the mean of its divisors is an integer number (2111688).

Almost surely, 2^12638841 is an apocalyptic number.

It is an amenable number.

12638841 is a deficient number, since it is larger than the sum of its proper divisors (4254663).

12638841 is a wasteful number, since it uses less digits than its factorization.

12638841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10431.

The product of its digits is 9216, while the sum is 33.

The square root of 12638841 is about 3555.1147660800. The cubic root of 12638841 is about 232.9355369448.

The spelling of 12638841 in words is "twelve million, six hundred thirty-eight thousand, eight hundred forty-one".