9728605 has 4 divisors (see below), whose sum is σ = 11674332. Its totient is φ = 7782880.

The previous prime is 9728597. The next prime is 9728611. The reversal of 9728605 is 5068279.

9728605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4901796 + 4826809 = 2214^2 + 2197^2 .

It is not a de Polignac number, because 9728605 - 2³ = 9728597 is a prime.

It is a Duffinian number.

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, 972856 + ... + 972865.

It is an arithmetic number, because the mean of its divisors is an integer number (2918583).

Almost surely, 2^9728605 is an apocalyptic number.

It is an amenable number.

9728605 is a deficient number, since it is larger than the sum of its proper divisors (1945727).

9728605 is a wasteful number, since it uses less digits than its factorization.

9728605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945726.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 9728605 is about 3119.0711758471. The cubic root of 9728605 is about 213.4765571980.

The spelling of 9728605 in words is "nine million, seven hundred twenty-eight thousand, six hundred five".