12278368 has 48 divisors (see below), whose sum is σ = 25446960. Its totient is φ = 5824000.

The previous prime is 12278333. The next prime is 12278377. The reversal of 12278368 is 86387221.

12278368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 93663 + ... + 93793.

It is an arithmetic number, because the mean of its divisors is an integer number (530145).

Almost surely, 2^12278368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12278368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12723480).

12278368 is an abundant number, since it is smaller than the sum of its proper divisors (13168592).

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

12278368 is a wasteful number, since it uses less digits than its factorization.

12278368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 263 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 12278368 is about 3504.0502279505. The cubic root of 12278368 is about 230.6996214439.

The spelling of 12278368 in words is "twelve million, two hundred seventy-eight thousand, three hundred sixty-eight".