12815105 has 8 divisors (see below), whose sum is σ = 15489600. Its totient is φ = 10177776.

The previous prime is 12815087. The next prime is 12815107. The reversal of 12815105 is 50151821.

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 12815105 - 2⁶ = 12815041 is a prime.

It is a super-2 number, since 2×12815105² = 328453832322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12815107) 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, 8525 + ... + 9914.

It is an arithmetic number, because the mean of its divisors is an integer number (1936200).

Almost surely, 2^12815105 is an apocalyptic number.

It is an amenable number.

12815105 is a deficient number, since it is larger than the sum of its proper divisors (2674495).

12815105 is a wasteful number, since it uses less digits than its factorization.

12815105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18583.

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 12815105 is about 3579.8191295092. The cubic root of 12815105 is about 234.0133980689.

Adding to 12815105 its reverse (50151821), we get a palindrome (62966926).

The spelling of 12815105 in words is "twelve million, eight hundred fifteen thousand, one hundred five".