12751232 has 64 divisors (see below), whose sum is σ = 27988800. Its totient is φ = 5750784.

The previous prime is 12751231. The next prime is 12751237. The reversal of 12751232 is 23215721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 12751198 and 12751207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12751231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131408 + ... + 131504.

It is an arithmetic number, because the mean of its divisors is an integer number (437325).

Almost surely, 2^12751232 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 12751232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13994400).

12751232 is an abundant number, since it is smaller than the sum of its proper divisors (15237568).

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

12751232 is an equidigital number, since it uses as much as digits as its factorization.

12751232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 191 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 12751232 is about 3570.8867246106. The cubic root of 12751232 is about 233.6239607623.

Adding to 12751232 its reverse (23215721), we get a palindrome (35966953).

The spelling of 12751232 in words is "twelve million, seven hundred fifty-one thousand, two hundred thirty-two".