28083 has 16 divisors (see below), whose sum is σ = 43776. Its totient is φ = 15840.
The previous prime is 28081. The next prime is 28087. The reversal of 28083 is 38082.
It is not a de Polignac number, because 28083 - 21 = 28081 is a prime.
28083 is a lucky number.
It is a nialpdrome in base 8.
It is not an unprimeable number, because it can be changed into a prime (28081) 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, 741 + ... + 777.
It is an arithmetic number, because the mean of its divisors is an integer number (2736).
228083 is an apocalyptic number.
28083 is a gapful number since it is divisible by the number (23) formed by its first and last digit.
28083 is a deficient number, since it is larger than the sum of its proper divisors (15693).
28083 is a wasteful number, since it uses less digits than its factorization.
28083 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 74.
The product of its (nonzero) digits is 384, while the sum is 21.
The square root of 28083 is about 167.5798317221. The cubic root of 28083 is about 30.3958645113.
Subtracting 28083 from its reverse (38082), we obtain a palindrome (9999).
It can be divided in two parts, 280 and 83, that added together give a palindrome (363).
The spelling of 28083 in words is "twenty-eight thousand, eighty-three".
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