12398886 has 64 divisors (see below), whose sum is σ = 29376000. Its totient is φ = 3868128.

The previous prime is 12398879. The next prime is 12398941. The reversal of 12398886 is 68889321.

12398886 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83140 + ... + 83288.

It is an arithmetic number, because the mean of its divisors is an integer number (459000).

Almost surely, 2^12398886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12398886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14688000).

12398886 is an abundant number, since it is smaller than the sum of its proper divisors (16977114).

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

12398886 is a wasteful number, since it uses less digits than its factorization.

12398886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 244 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 12398886 is about 3521.2051914082. The cubic root of 12398886 is about 231.4519739219.

The spelling of 12398886 in words is "twelve million, three hundred ninety-eight thousand, eight hundred eighty-six".