12219838 has 8 divisors (see below), whose sum is σ = 19408032. Its totient is φ = 5750496.

The previous prime is 12219829. The next prime is 12219871. The reversal of 12219838 is 83891221.

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 359407 = 12219838 / (1 + 2 + 2 + 1 + 9 + 8 + 3 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179670 + ... + 179737.

It is an arithmetic number, because the mean of its divisors is an integer number (2426004).

Almost surely, 2^12219838 is an apocalyptic number.

12219838 is a deficient number, since it is larger than the sum of its proper divisors (7188194).

12219838 is a wasteful number, since it uses less digits than its factorization.

12219838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359426.

The product of its digits is 6912, while the sum is 34.

The square root of 12219838 is about 3495.6884872654. The cubic root of 12219838 is about 230.3324618585.

The spelling of 12219838 in words is "twelve million, two hundred nineteen thousand, eight hundred thirty-eight".