12405632 has 32 divisors (see below), whose sum is σ = 26020200. Its totient is φ = 5875200.

The previous prime is 12405623. The next prime is 12405637. The reversal of 12405632 is 23650421.

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 = 12405598 and 12405607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119 + ... + 4982.

Almost surely, 2^12405632 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 12405632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13010100).

12405632 is an abundant number, since it is smaller than the sum of its proper divisors (13614568).

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

12405632 is an equidigital number, since it uses as much as digits as its factorization.

12405632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134 (or 5122 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 12405632 is about 3522.1629718115. The cubic root of 12405632 is about 231.4939425291.

The spelling of 12405632 in words is "twelve million, four hundred five thousand, six hundred thirty-two".