12193878 has 8 divisors (see below), whose sum is σ = 24387768. Its totient is φ = 4064624.

The previous prime is 12193871. The next prime is 12193889. The reversal of 12193878 is 87839121.

It is a sphenic number, since it is the product of 3 distinct primes.

12193878 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12193871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016151 + ... + 1016162.

It is an arithmetic number, because the mean of its divisors is an integer number (3048471).

Almost surely, 2^12193878 is an apocalyptic number.

12193878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12193878 is a wasteful number, since it uses less digits than its factorization.

12193878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032318.

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

The square root of 12193878 is about 3491.9733675960. The cubic root of 12193878 is about 230.1692390188.

The spelling of 12193878 in words is "twelve million, one hundred ninety-three thousand, eight hundred seventy-eight".