12805992 has 64 divisors (see below), whose sum is σ = 35985600. Its totient is φ = 4219200.

The previous prime is 12805973. The next prime is 12805993. The reversal of 12805992 is 29950821.

12805992 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12805992² = 327986862208128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12805993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21523 + ... + 22109.

It is an arithmetic number, because the mean of its divisors is an integer number (562275).

Almost surely, 2^12805992 is an apocalyptic number.

12805992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12805992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17992800).

12805992 is an abundant number, since it is smaller than the sum of its proper divisors (23179608).

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

12805992 is a wasteful number, since it uses less digits than its factorization.

12805992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 12805992 is about 3578.5460734773. The cubic root of 12805992 is about 233.9579148509.

The spelling of 12805992 in words is "twelve million, eight hundred five thousand, nine hundred ninety-two".