9728015 has 16 divisors (see below), whose sum is σ = 12894336. Its totient is φ = 6986400.

The previous prime is 9728009. The next prime is 9728023. The reversal of 9728015 is 5108279.

It is not a de Polignac number, because 9728015 - 2⁴ = 9727999 is a prime.

It is an Ulam number.

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 15 ways as a sum of consecutive naturals, for example, 3500 + ... + 5630.

It is an arithmetic number, because the mean of its divisors is an integer number (805896).

Almost surely, 2^9728015 is an apocalyptic number.

9728015 is a deficient number, since it is larger than the sum of its proper divisors (3166321).

9728015 is a wasteful number, since it uses less digits than its factorization.

9728015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 9728015 is about 3118.9765949747. The cubic root of 9728015 is about 213.4722416182.

The spelling of 9728015 in words is "nine million, seven hundred twenty-eight thousand, fifteen".