12179878 has 8 divisors (see below), whose sum is σ = 18437760. Its totient is φ = 6033960.

The previous prime is 12179873. The next prime is 12179891. The reversal of 12179878 is 87897121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12179873) 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, 27718 + ... + 28153.

It is an arithmetic number, because the mean of its divisors is an integer number (2304720).

Almost surely, 2^12179878 is an apocalyptic number.

12179878 is a deficient number, since it is larger than the sum of its proper divisors (6257882).

12179878 is a wasteful number, since it uses less digits than its factorization.

12179878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55982.

The product of its digits is 56448, while the sum is 43.

The square root of 12179878 is about 3489.9681946975. The cubic root of 12179878 is about 230.0811182051.

The spelling of 12179878 in words is "twelve million, one hundred seventy-nine thousand, eight hundred seventy-eight".