12666294 has 40 divisors (see below), whose sum is σ = 29089368. Its totient is φ = 4116960.

The previous prime is 12666281. The next prime is 12666299. The reversal of 12666294 is 49266621.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666299) 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 19 ways as a sum of consecutive naturals, for example, 5689 + ... + 7595.

Almost surely, 2^12666294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12666294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14544684).

12666294 is an abundant number, since it is smaller than the sum of its proper divisors (16423074).

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

12666294 is a wasteful number, since it uses less digits than its factorization.

12666294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962 (or 1953 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 12666294 is about 3558.9737284785. The cubic root of 12666294 is about 233.1040691388.

It can be divided in two parts, 126662 and 94, that added together give a triangular number (126756 = T₅₀₃).

The spelling of 12666294 in words is "twelve million, six hundred sixty-six thousand, two hundred ninety-four".