12921952 has 48 divisors (see below), whose sum is σ = 26968032. Its totient is φ = 6082560.

The previous prime is 12921943. The next prime is 12921967. The reversal of 12921952 is 25912921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71302 + ... + 71482.

It is an arithmetic number, because the mean of its divisors is an integer number (561834).

Almost surely, 2^12921952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12921952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13484016).

12921952 is an abundant number, since it is smaller than the sum of its proper divisors (14046080).

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

12921952 is a wasteful number, since it uses less digits than its factorization.

12921952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 303 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 12921952 is about 3594.7116713305. The cubic root of 12921952 is about 234.6619675942.

The spelling of 12921952 in words is "twelve million, nine hundred twenty-one thousand, nine hundred fifty-two".