9728432 has 20 divisors (see below), whose sum is σ = 21541776. Its totient is φ = 4169280.

The previous prime is 9728431. The next prime is 9728441. The reversal of 9728432 is 2348279.

It is a junction number, because it is equal to n+sod(n) for n = 9728392 and 9728401.

It is not an unprimeable number, because it can be changed into a prime (9728431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43319 + ... + 43542.

Almost surely, 2^9728432 is an apocalyptic number.

It is an amenable number.

9728432 is an abundant number, since it is smaller than the sum of its proper divisors (11813344).

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

9728432 is a wasteful number, since it uses less digits than its factorization.

9728432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86876 (or 86870 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 9728432 is about 3119.0434431088. The cubic root of 9728432 is about 213.4752918003.

The spelling of 9728432 in words is "nine million, seven hundred twenty-eight thousand, four hundred thirty-two".