28254317 has 16 divisors (see below), whose sum is σ = 34941312. Its totient is φ = 22248000.

The previous prime is 28254307. The next prime is 28254319. The reversal of 28254317 is 71345282.

It is a cyclic number.

It is not a de Polignac number, because 28254317 - 2⁴ = 28254301 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28254319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22223 + ... + 23459.

It is an arithmetic number, because the mean of its divisors is an integer number (2183832).

Almost surely, 2^28254317 is an apocalyptic number.

It is an amenable number.

28254317 is a deficient number, since it is larger than the sum of its proper divisors (6686995).

28254317 is a wasteful number, since it uses less digits than its factorization.

28254317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508.

The product of its digits is 13440, while the sum is 32.

The square root of 28254317 is about 5315.4790000526. The cubic root of 28254317 is about 304.5754803476.

Adding to 28254317 its reverse (71345282), we get a palindrome (99599599).

The spelling of 28254317 in words is "twenty-eight million, two hundred fifty-four thousand, three hundred seventeen".