12219378 has 16 divisors (see below), whose sum is σ = 24480576. Its totient is φ = 4066160.

The previous prime is 12219367. The next prime is 12219391. The reversal of 12219378 is 87391221.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3088 + ... + 5828.

It is an arithmetic number, because the mean of its divisors is an integer number (1530036).

Almost surely, 2^12219378 is an apocalyptic number.

12219378 is an abundant number, since it is smaller than the sum of its proper divisors (12261198).

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

12219378 is a wasteful number, since it uses less digits than its factorization.

12219378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489.

The product of its digits is 6048, while the sum is 33.

The square root of 12219378 is about 3495.6226913098. The cubic root of 12219378 is about 230.3295716330.

The spelling of 12219378 in words is "twelve million, two hundred nineteen thousand, three hundred seventy-eight".