12866364 has 144 divisors (see below), whose sum is σ = 40441856. Its totient is φ = 3499200.

The previous prime is 12866353. The next prime is 12866369. The reversal of 12866364 is 46366821.

12866364 is a `hidden beast` number, since 12 + 8 + 6 + 636 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866369) 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 47 ways as a sum of consecutive naturals, for example, 210894 + ... + 210954.

Almost surely, 2^12866364 is an apocalyptic number.

12866364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12866364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20220928).

12866364 is an abundant number, since it is smaller than the sum of its proper divisors (27575492).

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

12866364 is a wasteful number, since it uses less digits than its factorization.

12866364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 104 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 12866364 is about 3586.9714244750. The cubic root of 12866364 is about 234.3249922108.

The spelling of 12866364 in words is "twelve million, eight hundred sixty-six thousand, three hundred sixty-four".