12398412 has 96 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 3497472.

The previous prime is 12398381. The next prime is 12398413. The reversal of 12398412 is 21489321.

It is a self number, because there is not a number n which added to its sum of digits gives 12398412.

It is not an unprimeable number, because it can be changed into a prime (12398413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139264 + ... + 139352.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^12398412 is an apocalyptic number.

12398412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12398412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16934400).

12398412 is an abundant number, since it is smaller than the sum of its proper divisors (21470388).

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

12398412 is a wasteful number, since it uses less digits than its factorization.

12398412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 173 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 12398412 is about 3521.1378842641. The cubic root of 12398412 is about 231.4490244732.

Subtracting 12398412 from its reverse (21489321), we obtain a palindrome (9090909).

The spelling of 12398412 in words is "twelve million, three hundred ninety-eight thousand, four hundred twelve".