12388881 has 8 divisors (see below), whose sum is σ = 17236800. Its totient is φ = 7900112.

The previous prime is 12388877. The next prime is 12388897. The reversal of 12388881 is 18888321.

12388881 is digitally balanced in base 3, because in such base 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 a cyclic number.

It is not a de Polignac number, because 12388881 - 2² = 12388877 is a prime.

It is a super-2 number, since 2×12388881² = 306968744864322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12388811) 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, 89706 + ... + 89843.

It is an arithmetic number, because the mean of its divisors is an integer number (2154600).

Almost surely, 2^12388881 is an apocalyptic number.

It is an amenable number.

12388881 is a deficient number, since it is larger than the sum of its proper divisors (4847919).

12388881 is a wasteful number, since it uses less digits than its factorization.

12388881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179575.

The product of its digits is 24576, while the sum is 39.

The square root of 12388881 is about 3519.7842263412. The cubic root of 12388881 is about 231.3897021947.

The spelling of 12388881 in words is "twelve million, three hundred eighty-eight thousand, eight hundred eighty-one".