28027 has 2 divisors, whose sum is σ = 28028. Its totient is φ = 28026.
The previous prime is 28019. The next prime is 28031. The reversal of 28027 is 72082.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 28027 - 23 = 28019 is a prime.
It is a Chen prime.
28027 is a lucky number.
It is a plaindrome in base 7.
It is a junction number, because it is equal to n+sod(n) for n = 27995 and 28013.
It is not a weakly prime, because it can be changed into another prime (28057) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14013 + 14014.
It is an arithmetic number, because the mean of its divisors is an integer number (14014).
228027 is an apocalyptic number.
28027 is a deficient number, since it is larger than the sum of its proper divisors (1).
28027 is an equidigital number, since it uses as much as digits as its factorization.
28027 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 224, while the sum is 19.
The square root of 28027 is about 167.4126637982. The cubic root of 28027 is about 30.3756470477.
It can be divided in two parts, 2802 and 7, that added together give a square (2809 = 532).
The spelling of 28027 in words is "twenty-eight thousand, twenty-seven".
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