12398436 has 36 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 4118448.

The previous prime is 12398429. The next prime is 12398467. The reversal of 12398436 is 63489321.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12398436.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16885 + ... + 17603.

It is an arithmetic number, because the mean of its divisors is an integer number (873600).

Almost surely, 2^12398436 is an apocalyptic number.

It is an amenable number.

12398436 is an abundant number, since it is smaller than the sum of its proper divisors (19051164).

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

12398436 is a wasteful number, since it uses less digits than its factorization.

12398436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1203 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 12398436 is about 3521.1412922517. The cubic root of 12398436 is about 231.4491738142.

The spelling of 12398436 in words is "twelve million, three hundred ninety-eight thousand, four hundred thirty-six".