12870915 has 16 divisors (see below), whose sum is σ = 21489408. Its totient is φ = 6565856.

The previous prime is 12870899. The next prime is 12870919. The reversal of 12870915 is 51907821.

It is not a de Polignac number, because 12870915 - 2⁴ = 12870899 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12870919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18309 + ... + 18998.

It is an arithmetic number, because the mean of its divisors is an integer number (1343088).

Almost surely, 2^12870915 is an apocalyptic number.

12870915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12870915 is a deficient number, since it is larger than the sum of its proper divisors (8618493).

12870915 is a wasteful number, since it uses less digits than its factorization.

12870915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37338.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12870915 is about 3587.6057475704. The cubic root of 12870915 is about 234.3526168847.

The spelling of 12870915 in words is "twelve million, eight hundred seventy thousand, nine hundred fifteen".