12198312 has 48 divisors (see below), whose sum is σ = 37758240. Its totient is φ = 3485088.

The previous prime is 12198301. The next prime is 12198331. The reversal of 12198312 is 21389121.

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

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, 11598 + ... + 12605.

It is an arithmetic number, because the mean of its divisors is an integer number (786630).

Almost surely, 2^12198312 is an apocalyptic number.

12198312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12198312 is an abundant number, since it is smaller than the sum of its proper divisors (25559928).

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

12198312 is a wasteful number, since it uses less digits than its factorization.

12198312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24222 (or 24215 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 12198312 is about 3492.6081944587. The cubic root of 12198312 is about 230.1971340748.

The spelling of 12198312 in words is "twelve million, one hundred ninety-eight thousand, three hundred twelve".