12857844 has 12 divisors (see below), whose sum is σ = 30001664. Its totient is φ = 4285944.

The previous prime is 12857843. The next prime is 12857857. The reversal of 12857844 is 44875821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857843) by changing a digit.

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, 535732 + ... + 535755.

Almost surely, 2^12857844 is an apocalyptic number.

It is an amenable number.

12857844 is an abundant number, since it is smaller than the sum of its proper divisors (17143820).

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

12857844 is a wasteful number, since it uses less digits than its factorization.

12857844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071494 (or 1071492 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 12857844 is about 3585.7835963705. The cubic root of 12857844 is about 234.2732580981.

The spelling of 12857844 in words is "twelve million, eight hundred fifty-seven thousand, eight hundred forty-four".