12855144 has 32 divisors (see below), whose sum is σ = 32292000. Its totient is φ = 4264512.

The previous prime is 12855131. The next prime is 12855187. The reversal of 12855144 is 44155821.

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, 4327 + ... + 6665.

It is an arithmetic number, because the mean of its divisors is an integer number (1009125).

Almost surely, 2^12855144 is an apocalyptic number.

It is an amenable number.

12855144 is an abundant number, since it is smaller than the sum of its proper divisors (19436856).

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

12855144 is a wasteful number, since it uses less digits than its factorization.

12855144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2573 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The square root of 12855144 is about 3585.4070898574. The cubic root of 12855144 is about 234.2568587164.

The spelling of 12855144 in words is "twelve million, eight hundred fifty-five thousand, one hundred forty-four".