12319878 has 8 divisors (see below), whose sum is σ = 24639768. Its totient is φ = 4106624.

The previous prime is 12319877. The next prime is 12319907. The reversal of 12319878 is 87891321.

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

12319878 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12319871) 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, 1026651 + ... + 1026662.

It is an arithmetic number, because the mean of its divisors is an integer number (3079971).

Almost surely, 2^12319878 is an apocalyptic number.

12319878 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.

12319878 is a wasteful number, since it uses less digits than its factorization.

12319878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053318.

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

The square root of 12319878 is about 3509.9683759259. The cubic root of 12319878 is about 230.9593076876.

The spelling of 12319878 in words is "twelve million, three hundred nineteen thousand, eight hundred seventy-eight".