28163017 has 4 divisors (see below), whose sum is σ = 29387520. Its totient is φ = 26938516.

The previous prime is 28162991. The next prime is 28163021. The reversal of 28163017 is 71036182.

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 28163017 - 2¹¹ = 28160969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28163117) 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, 612217 + ... + 612262.

It is an arithmetic number, because the mean of its divisors is an integer number (7346880).

Almost surely, 2^28163017 is an apocalyptic number.

It is an amenable number.

28163017 is a deficient number, since it is larger than the sum of its proper divisors (1224503).

28163017 is a wasteful number, since it uses less digits than its factorization.

28163017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224502.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 28163017 is about 5306.8839256196. The cubic root of 28163017 is about 304.2470615369.

Adding to 28163017 its reverse (71036182), we get a palindrome (99199199).

The spelling of 28163017 in words is "twenty-eight million, one hundred sixty-three thousand, seventeen".