12291892 has 12 divisors (see below), whose sum is σ = 21535360. Its totient is φ = 6138936.

The previous prime is 12291871. The next prime is 12291893. The reversal of 12291892 is 29819221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12291893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6109 + ... + 7867.

Almost surely, 2^12291892 is an apocalyptic number.

It is an amenable number.

12291892 is a deficient number, since it is larger than the sum of its proper divisors (9243468).

12291892 is a wasteful number, since it uses less digits than its factorization.

12291892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510 (or 3508 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 12291892 is about 3505.9794637162. The cubic root of 12291892 is about 230.7842916780.

The spelling of 12291892 in words is "twelve million, two hundred ninety-one thousand, eight hundred ninety-two".