12308992 has 40 divisors (see below), whose sum is σ = 25472700. Its totient is φ = 5935104.

The previous prime is 12308987. The next prime is 12308999. The reversal of 12308992 is 29980321.

It can be written as a sum of positive squares in 2 ways, for example, as 12278016 + 30976 = 3504^2 + 176^2 .

It is a super-2 number, since 2×12308992² = 303022568112128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12308999) 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, 14434 + ... + 15262.

Almost surely, 2^12308992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12308992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12736350).

12308992 is an abundant number, since it is smaller than the sum of its proper divisors (13163708).

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

12308992 is an frugal number, since it uses more digits than its factorization.

12308992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 12308992 is about 3508.4173069919. The cubic root of 12308992 is about 230.8912614531.

The spelling of 12308992 in words is "twelve million, three hundred eight thousand, nine hundred ninety-two".