28331017 has 16 divisors (see below), whose sum is σ = 33792192. Its totient is φ = 23411520.

The previous prime is 28331003. The next prime is 28331029. The reversal of 28331017 is 71013382.

It is not a de Polignac number, because 28331017 - 2⁷ = 28330889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28330982 and 28331000.

It is not an unprimeable number, because it can be changed into a prime (28331047) 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, 8103 + ... + 11059.

It is an arithmetic number, because the mean of its divisors is an integer number (2112012).

Almost surely, 2^28331017 is an apocalyptic number.

It is an amenable number.

28331017 is a deficient number, since it is larger than the sum of its proper divisors (5461175).

28331017 is a wasteful number, since it uses less digits than its factorization.

28331017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 28331017 is about 5322.6888881467. The cubic root of 28331017 is about 304.8508345221.

Adding to 28331017 its reverse (71013382), we get a palindrome (99344399).

The spelling of 28331017 in words is "twenty-eight million, three hundred thirty-one thousand, seventeen".