12398812 has 12 divisors (see below), whose sum is σ = 21890736. Its totient is φ = 6144320.

The previous prime is 12398807. The next prime is 12398833. The reversal of 12398812 is 21889321.

It is a super-2 number, since 2×12398812² = 307461078022688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13264 + ... + 14167.

It is an arithmetic number, because the mean of its divisors is an integer number (1824228).

Almost surely, 2^12398812 is an apocalyptic number.

It is an amenable number.

12398812 is a deficient number, since it is larger than the sum of its proper divisors (9491924).

12398812 is a wasteful number, since it uses less digits than its factorization.

12398812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27548 (or 27546 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 12398812 is about 3521.1946836266. The cubic root of 12398812 is about 231.4515134644.

The spelling of 12398812 in words is "twelve million, three hundred ninety-eight thousand, eight hundred twelve".