12378198 has 32 divisors (see below), whose sum is σ = 28454400. Its totient is φ = 3516480.

The previous prime is 12378173. The next prime is 12378199. The reversal of 12378198 is 89187321.

12378198 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12378199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7618 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (889200).

Almost surely, 2^12378198 is an apocalyptic number.

12378198 is an abundant number, since it is smaller than the sum of its proper divisors (16076202).

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

12378198 is a wasteful number, since it uses less digits than its factorization.

12378198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692.

The product of its digits is 24192, while the sum is 39.

The square root of 12378198 is about 3518.2663344323. The cubic root of 12378198 is about 231.3231735321.

The spelling of 12378198 in words is "twelve million, three hundred seventy-eight thousand, one hundred ninety-eight".