12078198 has 24 divisors (see below), whose sum is σ = 28548936. Its totient is φ = 3660000.

The previous prime is 12078193. The next prime is 12078203. The reversal of 12078198 is 89187021.

12078198 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 an interprime number because it is at equal distance from previous prime (12078193) and next prime (12078203).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30303 + ... + 30698.

It is an arithmetic number, because the mean of its divisors is an integer number (1189539).

Almost surely, 2^12078198 is an apocalyptic number.

12078198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12078198 is an abundant number, since it is smaller than the sum of its proper divisors (16470738).

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

12078198 is a wasteful number, since it uses less digits than its factorization.

12078198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61020 (or 61017 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 12078198 is about 3475.3701961086. The cubic root of 12078198 is about 229.4390742057.

The spelling of 12078198 in words is "twelve million, seventy-eight thousand, one hundred ninety-eight".