12561792 has 32 divisors (see below), whose sum is σ = 33368280. Its totient is φ = 4187136.

The previous prime is 12561751. The next prime is 12561799. The reversal of 12561792 is 29716521.

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

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12561799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15973 + ... + 16740.

Almost surely, 2^12561792 is an apocalyptic number.

12561792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12561792 is an abundant number, since it is smaller than the sum of its proper divisors (20806488).

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

12561792 is an equidigital number, since it uses as much as digits as its factorization.

12561792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32730 (or 32718 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 12561792 is about 3544.2618413430. The cubic root of 12561792 is about 232.4612306728.

The spelling of 12561792 in words is "twelve million, five hundred sixty-one thousand, seven hundred ninety-two".