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28295 = 55659
BaseRepresentation
bin110111010000111
31102210222
412322013
51401140
6334555
7145331
oct67207
942728
1028295
111a293
121445b
13cb57
14a451
1585b5
hex6e87

28295 has 4 divisors (see below), whose sum is σ = 33960. Its totient is φ = 22632.

The previous prime is 28289. The next prime is 28297. The reversal of 28295 is 59282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59282 = 229641.

It is a cyclic number.

It is not a de Polignac number, because 28295 - 24 = 28279 is a prime.

It is a plaindrome in base 6 and base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28297) 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, 2825 + ... + 2834.

It is an arithmetic number, because the mean of its divisors is an integer number (8490).

228295 is an apocalyptic number.

28295 is a deficient number, since it is larger than the sum of its proper divisors (5665).

28295 is an equidigital number, since it uses as much as digits as its factorization.

28295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5664.

The product of its digits is 1440, while the sum is 26.

The square root of 28295 is about 168.2111767987. The cubic root of 28295 is about 30.4721594914.

It can be divided in two parts, 28 and 295, that added together give a palindrome (323).

The spelling of 28295 in words is "twenty-eight thousand, two hundred ninety-five".

Divisors: 1 5 5659 28295