12886305 has 16 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 6850688.

The previous prime is 12886301. The next prime is 12886327. The reversal of 12886305 is 50368821.

12886305 = 333² + 334² + ... + 422².

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12886305 - 2² = 12886301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12886301) 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, 4189 + ... + 6581.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^12886305 is an apocalyptic number.

12886305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12886305 is a deficient number, since it is larger than the sum of its proper divisors (7797855).

12886305 is a wasteful number, since it uses less digits than its factorization.

12886305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 12886305 is about 3589.7499912947. The cubic root of 12886305 is about 234.4459863201.

The spelling of 12886305 in words is "twelve million, eight hundred eighty-six thousand, three hundred five".