12402432 has 108 divisors (see below), whose sum is σ = 40920880. Its totient is φ = 3538944.

The previous prime is 12402431. The next prime is 12402457. The reversal of 12402432 is 23420421.

12402432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15744 + ... + 16512.

Almost surely, 2^12402432 is an apocalyptic number.

12402432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12402432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20460440).

12402432 is an abundant number, since it is smaller than the sum of its proper divisors (28518448).

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

12402432 is an equidigital number, since it uses as much as digits as its factorization.

12402432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12402432 is about 3521.7086761968. The cubic root of 12402432 is about 231.4740364005.

Adding to 12402432 its reverse (23420421), we get a palindrome (35822853).

The spelling of 12402432 in words is "twelve million, four hundred two thousand, four hundred thirty-two".