12904832 has 32 divisors (see below), whose sum is σ = 26346600. Its totient is φ = 6292480.

The previous prime is 12904813. The next prime is 12904841. The reversal of 12904832 is 23840921.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 12904795 and 12904804.

It is a congruent number.

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, 4019 + ... + 6477.

Almost surely, 2^12904832 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 12904832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13173300).

12904832 is an abundant number, since it is smaller than the sum of its proper divisors (13441768).

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

12904832 is an equidigital number, since it uses as much as digits as its factorization.

12904832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514 (or 2502 counting only the distinct ones).

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

The square root of 12904832 is about 3592.3296062583. The cubic root of 12904832 is about 234.5582890275.

The spelling of 12904832 in words is "twelve million, nine hundred four thousand, eight hundred thirty-two".