12916305 has 48 divisors (see below), whose sum is σ = 23721984. Its totient is φ = 6491520.

The previous prime is 12916289. The next prime is 12916313. The reversal of 12916305 is 50361921.

12916305 is a `hidden beast` number, since 1 + 29 + 1 + 630 + 5 = 666.

It is not a de Polignac number, because 12916305 - 2⁴ = 12916289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65467 + ... + 65663.

It is an arithmetic number, because the mean of its divisors is an integer number (494208).

Almost surely, 2^12916305 is an apocalyptic number.

12916305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12916305 is a deficient number, since it is larger than the sum of its proper divisors (10805679).

12916305 is a wasteful number, since it uses less digits than its factorization.

12916305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 12916305 is about 3593.9261261189. The cubic root of 12916305 is about 234.6277795393.

The spelling of 12916305 in words is "twelve million, nine hundred sixteen thousand, three hundred five".