28708017 has 16 divisors (see below), whose sum is σ = 41321280. Its totient is φ = 17623872.

The previous prime is 28708007. The next prime is 28708039. The reversal of 28708017 is 71080782.

It is not a de Polignac number, because 28708017 - 2¹⁴ = 28691633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28708007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25143 + ... + 26259.

It is an arithmetic number, because the mean of its divisors is an integer number (2582580).

Almost surely, 2^28708017 is an apocalyptic number.

It is an amenable number.

28708017 is a deficient number, since it is larger than the sum of its proper divisors (12613263).

28708017 is a wasteful number, since it uses less digits than its factorization.

28708017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792.

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 28708017 is about 5357.9862821773. The cubic root of 28708017 is about 306.1970941789.

Adding to 28708017 its reverse (71080782), we get a palindrome (99788799).

The spelling of 28708017 in words is "twenty-eight million, seven hundred eight thousand, seventeen".