28536017 has 4 divisors (see below), whose sum is σ = 28546740. Its totient is φ = 28525296.

The previous prime is 28536007. The next prime is 28536019. The reversal of 28536017 is 71063582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 71063582 = 2 ⋅35531791.

It can be written as a sum of positive squares in 2 ways, for example, as 25441936 + 3094081 = 5044^2 + 1759^2 .

It is a cyclic number.

It is not a de Polignac number, because 28536017 - 2²⁴ = 11758801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28536019) 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, 2003 + ... + 7815.

It is an arithmetic number, because the mean of its divisors is an integer number (7136685).

Almost surely, 2^28536017 is an apocalyptic number.

It is an amenable number.

28536017 is a deficient number, since it is larger than the sum of its proper divisors (10723).

28536017 is an equidigital number, since it uses as much as digits as its factorization.

28536017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10722.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28536017 is about 5341.9113620501. The cubic root of 28536017 is about 305.5843567244.

Adding to 28536017 its reverse (71063582), we get a palindrome (99599599).

The spelling of 28536017 in words is "twenty-eight million, five hundred thirty-six thousand, seventeen".