12855424 has 32 divisors (see below), whose sum is σ = 26010000. Its totient is φ = 6327552.

The previous prime is 12855407. The next prime is 12855449. The reversal of 12855424 is 42455821.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7827 + ... + 9325.

Almost surely, 2^12855424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12855424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13005000).

12855424 is an abundant number, since it is smaller than the sum of its proper divisors (13154576).

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

12855424 is an equidigital number, since it uses as much as digits as its factorization.

12855424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580 (or 1568 counting only the distinct ones).

The product of its digits is 12800, while the sum is 31.

The square root of 12855424 is about 3585.4461368148. The cubic root of 12855424 is about 234.2585594997.

The spelling of 12855424 in words is "twelve million, eight hundred fifty-five thousand, four hundred twenty-four".