12845916 has 18 divisors (see below), whose sum is σ = 32471712. Its totient is φ = 4281960.

The previous prime is 12845909. The next prime is 12845939. The reversal of 12845916 is 61954821.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 356831 = 12845916 / (1 + 2 + 8 + 4 + 5 + 9 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178380 + ... + 178451.

It is an arithmetic number, because the mean of its divisors is an integer number (1803984).

Almost surely, 2^12845916 is an apocalyptic number.

It is an amenable number.

12845916 is an abundant number, since it is smaller than the sum of its proper divisors (19625796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12845916 is a wasteful number, since it uses less digits than its factorization.

12845916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356841 (or 356836 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 12845916 is about 3584.1199756705. The cubic root of 12845916 is about 234.2007919320.

The spelling of 12845916 in words is "twelve million, eight hundred forty-five thousand, nine hundred sixteen".