12838215 has 16 divisors (see below), whose sum is σ = 22121568. Its totient is φ = 6320256.

The previous prime is 12838201. The next prime is 12838219. The reversal of 12838215 is 51283821.

It is not a de Polignac number, because 12838215 - 2⁶ = 12838151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12838219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32724 + ... + 33113.

It is an arithmetic number, because the mean of its divisors is an integer number (1382598).

Almost surely, 2^12838215 is an apocalyptic number.

12838215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12838215 is a deficient number, since it is larger than the sum of its proper divisors (9283353).

12838215 is a wasteful number, since it uses less digits than its factorization.

12838215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65858.

The product of its digits is 3840, while the sum is 30.

The square root of 12838215 is about 3583.0454923152. The cubic root of 12838215 is about 234.1539822215.

The spelling of 12838215 in words is "twelve million, eight hundred thirty-eight thousand, two hundred fifteen".