12509632 has 28 divisors (see below), whose sum is σ = 25182576. Its totient is φ = 6164480.

The previous prime is 12509611. The next prime is 12509641. The reversal of 12509632 is 23690521.

12509632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12509632.

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, 3168 + ... + 5920.

Almost surely, 2^12509632 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 12509632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12591288).

12509632 is an abundant number, since it is smaller than the sum of its proper divisors (12672944).

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

12509632 is an equidigital number, since it uses as much as digits as its factorization.

12509632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836 (or 2826 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 12509632 is about 3536.8958141285. The cubic root of 12509632 is about 232.1390367543.

The spelling of 12509632 in words is "twelve million, five hundred nine thousand, six hundred thirty-two".