12566268 has 72 divisors (see below), whose sum is σ = 37333296. Its totient is φ = 3513600.

The previous prime is 12566261. The next prime is 12566291. The reversal of 12566268 is 86266521.

12566268 is a `hidden beast` number, since 1 + 25 + 6 + 626 + 8 = 666.

It is a super-2 number, since 2×12566268² = 315822182895648, which contains 22 as substring.

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 (12566261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3928 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (518518).

Almost surely, 2^12566268 is an apocalyptic number.

12566268 is a gapful number since it is divisible by the number (18) 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 12566268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18666648).

12566268 is an abundant number, since it is smaller than the sum of its proper divisors (24767028).

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

12566268 is a wasteful number, since it uses less digits than its factorization.

12566268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475 (or 2470 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 12566268 is about 3544.8932282933. The cubic root of 12566268 is about 232.4888374800.

The spelling of 12566268 in words is "twelve million, five hundred sixty-six thousand, two hundred sixty-eight".