12251916 has 36 divisors (see below), whose sum is σ = 32318832. Its totient is φ = 3906144.

The previous prime is 12251909. The next prime is 12251929. The reversal of 12251916 is 61915221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12251916.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6571 + ... + 8226.

Almost surely, 2^12251916 is an apocalyptic number.

It is an amenable number.

12251916 is an abundant number, since it is smaller than the sum of its proper divisors (20066916).

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

12251916 is a wasteful number, since it uses less digits than its factorization.

12251916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14830 (or 14825 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 12251916 is about 3500.2737035838. The cubic root of 12251916 is about 230.5338324743.

The spelling of 12251916 in words is "twelve million, two hundred fifty-one thousand, nine hundred sixteen".