12318656 has 56 divisors (see below), whose sum is σ = 28870656. Its totient is φ = 5103360.

The previous prime is 12318623. The next prime is 12318689. The reversal of 12318656 is 65681321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12318623) and next prime (12318689).

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13445 + ... + 14331.

Almost surely, 2^12318656 is an apocalyptic number.

12318656 is a gapful number since it is divisible by the number (16) 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 12318656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14435328).

12318656 is an abundant number, since it is smaller than the sum of its proper divisors (16552000).

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

12318656 is an equidigital number, since it uses as much as digits as its factorization.

12318656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937 (or 927 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 12318656 is about 3509.7942959666. The cubic root of 12318656 is about 230.9516712049.

Adding to 12318656 its reverse (65681321), we get a palindrome (77999977).

The spelling of 12318656 in words is "twelve million, three hundred eighteen thousand, six hundred fifty-six".