12930920 has 16 divisors (see below), whose sum is σ = 29094660. Its totient is φ = 5172352.

The previous prime is 12930913. The next prime is 12930923. The reversal of 12930920 is 2903921.

12930920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12013156 + 917764 = 3466^2 + 958^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12930920.

It is not an unprimeable number, because it can be changed into a prime (12930923) 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, 161597 + ... + 161676.

Almost surely, 2^12930920 is an apocalyptic number.

12930920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12930920 is an abundant number, since it is smaller than the sum of its proper divisors (16163740).

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

12930920 is a wasteful number, since it uses less digits than its factorization.

12930920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323284 (or 323280 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 12930920 is about 3595.9588429235. The cubic root of 12930920 is about 234.7162411764.

The spelling of 12930920 in words is "twelve million, nine hundred thirty thousand, nine hundred twenty".