12678222 has 8 divisors (see below), whose sum is σ = 25356456. Its totient is φ = 4226072.

The previous prime is 12678199. The next prime is 12678223. The reversal of 12678222 is 22287621.

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

12678222 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12678222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12678223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056513 + ... + 1056524.

It is an arithmetic number, because the mean of its divisors is an integer number (3169557).

Almost surely, 2^12678222 is an apocalyptic number.

12678222 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.

12678222 is a wasteful number, since it uses less digits than its factorization.

12678222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113042.

The product of its digits is 5376, while the sum is 30.

The square root of 12678222 is about 3560.6490981280. The cubic root of 12678222 is about 233.1772184750.

The spelling of 12678222 in words is "twelve million, six hundred seventy-eight thousand, two hundred twenty-two".