12938815 has 8 divisors (see below), whose sum is σ = 15639120. Its totient is φ = 10276032.

The previous prime is 12938813. The next prime is 12938831. The reversal of 12938815 is 51883921.

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

It is a cyclic number.

It is not a de Polignac number, because 12938815 - 2¹ = 12938813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12938813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8614 + ... + 10003.

It is an arithmetic number, because the mean of its divisors is an integer number (1954890).

Almost surely, 2^12938815 is an apocalyptic number.

12938815 is a deficient number, since it is larger than the sum of its proper divisors (2700305).

12938815 is a wasteful number, since it uses less digits than its factorization.

12938815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18761.

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

The square root of 12938815 is about 3597.0564354761. The cubic root of 12938815 is about 234.7640002871.

The spelling of 12938815 in words is "twelve million, nine hundred thirty-eight thousand, eight hundred fifteen".