12820934 has 32 divisors (see below), whose sum is σ = 23358720. Its totient is φ = 5155488.

The previous prime is 12820909. The next prime is 12820937. The reversal of 12820934 is 43902821.

It is a junction number, because it is equal to n+sod(n) for n = 12820897 and 12820906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12820937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41609 + ... + 41915.

It is an arithmetic number, because the mean of its divisors is an integer number (729960).

Almost surely, 2^12820934 is an apocalyptic number.

12820934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12820934 is a deficient number, since it is larger than the sum of its proper divisors (10537786).

12820934 is a wasteful number, since it uses less digits than its factorization.

12820934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12820934 is about 3580.6331842287. The cubic root of 12820934 is about 234.0488733234.

The spelling of 12820934 in words is "twelve million, eight hundred twenty thousand, nine hundred thirty-four".