12820992 has 80 divisors (see below), whose sum is σ = 36238752. Its totient is φ = 4014080.

The previous prime is 12820979. The next prime is 12821021. The reversal of 12820992 is 29902821.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25867 + ... + 26357.

Almost surely, 2^12820992 is an apocalyptic number.

12820992 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 12820992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18119376).

12820992 is an abundant number, since it is smaller than the sum of its proper divisors (23417760).

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

12820992 is an equidigital number, since it uses as much as digits as its factorization.

12820992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12820992 is about 3580.6412833458. The cubic root of 12820992 is about 234.0492262570.

The spelling of 12820992 in words is "twelve million, eight hundred twenty thousand, nine hundred ninety-two".