12289888 has 48 divisors (see below), whose sum is σ = 26925696. Its totient is φ = 5483520.

The previous prime is 12289847. The next prime is 12289891. The reversal of 12289888 is 88898221.

12289888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12420 + ... + 13372.

It is an arithmetic number, because the mean of its divisors is an integer number (560952).

Almost surely, 2^12289888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12289888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13462848).

12289888 is an abundant number, since it is smaller than the sum of its proper divisors (14635808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12289888 is a wasteful number, since it uses less digits than its factorization.

12289888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 999 counting only the distinct ones).

The product of its digits is 147456, while the sum is 46.

The square root of 12289888 is about 3505.6936546139. The cubic root of 12289888 is about 230.7717490779.

The spelling of 12289888 in words is "twelve million, two hundred eighty-nine thousand, eight hundred eighty-eight".