12266656 has 24 divisors (see below), whose sum is σ = 25571700. Its totient is φ = 5772288.

The previous prime is 12266641. The next prime is 12266663. The reversal of 12266656 is 65666221.

It can be written as a sum of positive squares in 2 ways, for example, as 9511056 + 2755600 = 3084^2 + 1660^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10731 + ... + 11818.

Almost surely, 2^12266656 is an apocalyptic number.

12266656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12266656 is an abundant number, since it is smaller than the sum of its proper divisors (13305044).

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

12266656 is a wasteful number, since it uses less digits than its factorization.

12266656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22576 (or 22568 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 12266656 is about 3502.3786203093. The cubic root of 12266656 is about 230.6262454184.

The spelling of 12266656 in words is "twelve million, two hundred sixty-six thousand, six hundred fifty-six".