12838865 has 8 divisors (see below), whose sum is σ = 16591848. Its totient is φ = 9480960.

The previous prime is 12838801. The next prime is 12838877. The reversal of 12838865 is 56883821.

It can be written as a sum of positive squares in 4 ways, for example, as 108241 + 12730624 = 329^2 + 3568^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12838865 - 2⁶ = 12838801 is a prime.

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, 98696 + ... + 98825.

It is an arithmetic number, because the mean of its divisors is an integer number (2073981).

Almost surely, 2^12838865 is an apocalyptic number.

It is an amenable number.

12838865 is a deficient number, since it is larger than the sum of its proper divisors (3752983).

12838865 is a wasteful number, since it uses less digits than its factorization.

12838865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197539.

The product of its digits is 92160, while the sum is 41.

The square root of 12838865 is about 3583.1361961276. The cubic root of 12838865 is about 234.1579339007.

The spelling of 12838865 in words is "twelve million, eight hundred thirty-eight thousand, eight hundred sixty-five".