10728565 has 4 divisors (see below), whose sum is σ = 12874284. Its totient is φ = 8582848.

The previous prime is 10728539. The next prime is 10728577. The reversal of 10728565 is 56582701.

10728565 is digitally balanced in base 3, 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 2196324 + 8532241 = 1482^2 + 2921^2 .

It is a cyclic number.

It is not a de Polignac number, because 10728565 - 2¹¹ = 10726517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10728565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072852 + ... + 1072861.

It is an arithmetic number, because the mean of its divisors is an integer number (3218571).

Almost surely, 2^10728565 is an apocalyptic number.

It is an amenable number.

10728565 is a deficient number, since it is larger than the sum of its proper divisors (2145719).

10728565 is an equidigital number, since it uses as much as digits as its factorization.

10728565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145718.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 10728565 is about 3275.4488242071. The cubic root of 10728565 is about 220.5534618406.

The spelling of 10728565 in words is "ten million, seven hundred twenty-eight thousand, five hundred sixty-five".