12961928 has 16 divisors (see below), whose sum is σ = 27775680. Its totient is φ = 5555088.

The previous prime is 12961919. The next prime is 12961931. The reversal of 12961928 is 82916921.

It is a junction number, because it is equal to n+sod(n) for n = 12961891 and 12961900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115676 + ... + 115787.

It is an arithmetic number, because the mean of its divisors is an integer number (1735980).

Almost surely, 2^12961928 is an apocalyptic number.

It is an amenable number.

12961928 is an abundant number, since it is smaller than the sum of its proper divisors (14813752).

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

12961928 is a wasteful number, since it uses less digits than its factorization.

12961928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231476 (or 231472 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 12961928 is about 3600.2677678195. The cubic root of 12961928 is about 234.9037058321.

The spelling of 12961928 in words is "twelve million, nine hundred sixty-one thousand, nine hundred twenty-eight".