12278244 has 48 divisors (see below), whose sum is σ = 31481856. Its totient is φ = 3693600.

The previous prime is 12278221. The next prime is 12278249. The reversal of 12278244 is 44287221.

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 15 ways as a sum of consecutive naturals, for example, 24969 + ... + 25455.

It is an arithmetic number, because the mean of its divisors is an integer number (655872).

Almost surely, 2^12278244 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 12278244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15740928).

12278244 is an abundant number, since it is smaller than the sum of its proper divisors (19203612).

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

12278244 is a wasteful number, since it uses less digits than its factorization.

12278244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 694 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 12278244 is about 3504.0325340955. The cubic root of 12278244 is about 230.6988448247.

The spelling of 12278244 in words is "twelve million, two hundred seventy-eight thousand, two hundred forty-four".