12398688 has 36 divisors (see below), whose sum is σ = 35259588. Its totient is φ = 4132800.

The previous prime is 12398671. The next prime is 12398693. The reversal of 12398688 is 88689321.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21238 + ... + 21813.

It is an arithmetic number, because the mean of its divisors is an integer number (979433).

Almost surely, 2^12398688 is an apocalyptic number.

12398688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12398688 is an abundant number, since it is smaller than the sum of its proper divisors (22860900).

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

12398688 is a wasteful number, since it uses less digits than its factorization.

12398688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43067 (or 43056 counting only the distinct ones).

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

The square root of 12398688 is about 3521.1770759222. The cubic root of 12398688 is about 231.4507418828.

The spelling of 12398688 in words is "twelve million, three hundred ninety-eight thousand, six hundred eighty-eight".