82538 has 4 divisors (see below), whose sum is σ = 123810. Its totient is φ = 41268.
The previous prime is 82531. The next prime is 82549. The reversal of 82538 is 83528.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 82369 + 169 = 287^2 + 13^2 .
It is an Ulam number.
It is not an unprimeable number, because it can be changed into a prime (82531) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20633 + ... + 20636.
282538 is an apocalyptic number.
82538 is a deficient number, since it is larger than the sum of its proper divisors (41272).
82538 is a wasteful number, since it uses less digits than its factorization.
82538 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 41271.
The product of its digits is 1920, while the sum is 26.
The square root of 82538 is about 287.2942742207. The cubic root of 82538 is about 43.5396212750.
Subtracting 82538 from its reverse (83528), we obtain a triangular number (990 = T44).
The spelling of 82538 in words is "eighty-two thousand, five hundred thirty-eight".
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