12278349 has 12 divisors (see below), whose sum is σ = 18148416. Its totient is φ = 7994952.

The previous prime is 12278333. The next prime is 12278377. The reversal of 12278349 is 94387221.

It is not a de Polignac number, because 12278349 - 2⁴ = 12278333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12278249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15477 + ... + 16250.

It is an arithmetic number, because the mean of its divisors is an integer number (1512368).

Almost surely, 2^12278349 is an apocalyptic number.

It is an amenable number.

12278349 is a deficient number, since it is larger than the sum of its proper divisors (5870067).

12278349 is a wasteful number, since it uses less digits than its factorization.

12278349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31776 (or 31773 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 12278349 is about 3504.0475168011. The cubic root of 12278349 is about 230.6995024461.

The spelling of 12278349 in words is "twelve million, two hundred seventy-eight thousand, three hundred forty-nine".