12785915 has 8 divisors (see below), whose sum is σ = 15454320. Its totient is φ = 10154592.

The previous prime is 12785869. The next prime is 12785933. The reversal of 12785915 is 51958721.

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 12785915 - 2²⁰ = 11737339 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8504 + ... + 9893.

It is an arithmetic number, because the mean of its divisors is an integer number (1931790).

Almost surely, 2^12785915 is an apocalyptic number.

12785915 is a deficient number, since it is larger than the sum of its proper divisors (2668405).

12785915 is a wasteful number, since it uses less digits than its factorization.

12785915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18541.

The product of its digits is 25200, while the sum is 38.

The square root of 12785915 is about 3575.7397835972. The cubic root of 12785915 is about 233.8355859205.

The spelling of 12785915 in words is "twelve million, seven hundred eighty-five thousand, nine hundred fifteen".