12928432 has 80 divisors (see below), whose sum is σ = 30132000. Its totient is φ = 5304320.

The previous prime is 12928427. The next prime is 12928439. The reversal of 12928432 is 23482921.

It is a junction number, because it is equal to n+sod(n) for n = 12928394 and 12928403.

It is not an unprimeable number, because it can be changed into a prime (12928439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86694 + ... + 86842.

It is an arithmetic number, because the mean of its divisors is an integer number (376650).

Almost surely, 2^12928432 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 12928432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15066000).

12928432 is an abundant number, since it is smaller than the sum of its proper divisors (17203568).

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

12928432 is a wasteful number, since it uses less digits than its factorization.

12928432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 208 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 12928432 is about 3595.6128823888. The cubic root of 12928432 is about 234.7011865254.

It can be divided in two parts, 129 and 28432, that added together give a 4-th power (28561 = 13⁴).

The spelling of 12928432 in words is "twelve million, nine hundred twenty-eight thousand, four hundred thirty-two".