28596917 has 4 divisors (see below), whose sum is σ = 28607616. Its totient is φ = 28586220.

The previous prime is 28596823. The next prime is 28596923. The reversal of 28596917 is 71969582.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28596917 - 2⁸ = 28596661 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 (28596977) 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, 2492 + ... + 7962.

It is an arithmetic number, because the mean of its divisors is an integer number (7151904).

Almost surely, 2^28596917 is an apocalyptic number.

It is an amenable number.

28596917 is a deficient number, since it is larger than the sum of its proper divisors (10699).

28596917 is an equidigital number, since it uses as much as digits as its factorization.

28596917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10698.

The product of its digits is 272160, while the sum is 47.

The square root of 28596917 is about 5347.6085309230. The cubic root of 28596917 is about 305.8015893784.

The spelling of 28596917 in words is "twenty-eight million, five hundred ninety-six thousand, nine hundred seventeen".