12905115 has 8 divisors (see below), whose sum is σ = 20648208. Its totient is φ = 6882720.

The previous prime is 12905111. The next prime is 12905131. The reversal of 12905115 is 51150921.

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

It is not a de Polignac number, because 12905115 - 2² = 12905111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12905111) by changing a digit.

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, 430156 + ... + 430185.

It is an arithmetic number, because the mean of its divisors is an integer number (2581026).

Almost surely, 2^12905115 is an apocalyptic number.

12905115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12905115 is a deficient number, since it is larger than the sum of its proper divisors (7743093).

12905115 is an equidigital number, since it uses as much as digits as its factorization.

12905115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860349.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 12905115 is about 3592.3689955237. The cubic root of 12905115 is about 234.5600036181.

The spelling of 12905115 in words is "twelve million, nine hundred five thousand, one hundred fifteen".