12915838 has 8 divisors (see below), whose sum is σ = 20864088. Its totient is φ = 5961144.

The previous prime is 12915821. The next prime is 12915883. The reversal of 12915838 is 83851921.

12915838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 12915797 and 12915806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248356 + ... + 248407.

It is an arithmetic number, because the mean of its divisors is an integer number (2608011).

Almost surely, 2^12915838 is an apocalyptic number.

12915838 is a deficient number, since it is larger than the sum of its proper divisors (7948250).

12915838 is a wasteful number, since it uses less digits than its factorization.

12915838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496778.

The product of its digits is 17280, while the sum is 37.

The square root of 12915838 is about 3593.8611548027. The cubic root of 12915838 is about 234.6249517829.

The spelling of 12915838 in words is "twelve million, nine hundred fifteen thousand, eight hundred thirty-eight".