12438081 has 12 divisors (see below), whose sum is σ = 18235152. Its totient is φ = 8167896.

The previous prime is 12438079. The next prime is 12438089. The reversal of 12438081 is 18083421.

12438081 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 not a de Polignac number, because 12438081 - 2¹ = 12438079 is a prime.

It is a super-2 number, since 2×12438081² = 309411717925122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12438089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9711 + ... + 10916.

It is an arithmetic number, because the mean of its divisors is an integer number (1519596).

Almost surely, 2^12438081 is an apocalyptic number.

It is an amenable number.

12438081 is a deficient number, since it is larger than the sum of its proper divisors (5797071).

12438081 is a wasteful number, since it uses less digits than its factorization.

12438081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20700 (or 20697 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 12438081 is about 3526.7663659505. The cubic root of 12438081 is about 231.6956038131.

The spelling of 12438081 in words is "twelve million, four hundred thirty-eight thousand, eighty-one".