12434656 has 48 divisors (see below), whose sum is σ = 26798688. Its totient is φ = 5644800.

The previous prime is 12434647. The next prime is 12434657. The reversal of 12434656 is 65643421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12434657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29326 + ... + 29746.

It is an arithmetic number, because the mean of its divisors is an integer number (558306).

Almost surely, 2^12434656 is an apocalyptic number.

12434656 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 12434656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13399344).

12434656 is an abundant number, since it is smaller than the sum of its proper divisors (14364032).

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

12434656 is a wasteful number, since it uses less digits than its factorization.

12434656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 507 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 12434656 is about 3526.2807602345. The cubic root of 12434656 is about 231.6743349830.

The spelling of 12434656 in words is "twelve million, four hundred thirty-four thousand, six hundred fifty-six".