28282717 has 4 divisors (see below), whose sum is σ = 28299456. Its totient is φ = 28265980.

The previous prime is 28282693. The next prime is 28282739. The reversal of 28282717 is 71728282.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28282717 - 2¹¹ = 28280669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28282217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5509 + ... + 9322.

It is an arithmetic number, because the mean of its divisors is an integer number (7074864).

Almost surely, 2^28282717 is an apocalyptic number.

It is an amenable number.

28282717 is a deficient number, since it is larger than the sum of its proper divisors (16739).

28282717 is a wasteful number, since it uses less digits than its factorization.

28282717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16738.

The product of its digits is 25088, while the sum is 37.

The square root of 28282717 is about 5318.1497722422. The cubic root of 28282717 is about 304.6774948124.

The spelling of 28282717 in words is "twenty-eight million, two hundred eighty-two thousand, seven hundred seventeen".