12853729 has 6 divisors (see below), whose sum is σ = 14952354. Its totient is φ = 11017440.

The previous prime is 12853721. The next prime is 12853733. The reversal of 12853729 is 92735821.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 603729 = 3500^2 + 777^2 .

It is not a de Polignac number, because 12853729 - 2³ = 12853721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12853721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131112 + ... + 131209.

It is an arithmetic number, because the mean of its divisors is an integer number (2492059).

Almost surely, 2^12853729 is an apocalyptic number.

It is an amenable number.

12853729 is a deficient number, since it is larger than the sum of its proper divisors (2098625).

12853729 is an equidigital number, since it uses as much as digits as its factorization.

12853729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262335 (or 262328 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 12853729 is about 3585.2097567646. The cubic root of 12853729 is about 234.2482633085.

The spelling of 12853729 in words is "twelve million, eight hundred fifty-three thousand, seven hundred twenty-nine".