12857144 has 8 divisors (see below), whose sum is σ = 24107160. Its totient is φ = 6428568.

The previous prime is 12857137. The next prime is 12857147. The reversal of 12857144 is 44175821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12857144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857147) 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 as a sum of consecutive naturals, namely, 803564 + ... + 803579.

It is an arithmetic number, because the mean of its divisors is an integer number (3013395).

Almost surely, 2^12857144 is an apocalyptic number.

It is an amenable number.

12857144 is a deficient number, since it is larger than the sum of its proper divisors (11250016).

12857144 is a wasteful number, since it uses less digits than its factorization.

12857144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607149 (or 1607145 counting only the distinct ones).

The product of its digits is 8960, while the sum is 32.

The square root of 12857144 is about 3585.6859873670. The cubic root of 12857144 is about 234.2690066270.

The spelling of 12857144 in words is "twelve million, eight hundred fifty-seven thousand, one hundred forty-four".