82490 has 16 divisors (see below), whose sum is σ = 151848. Its totient is φ = 32256.

The previous prime is 82487. The next prime is 82493. The reversal of 82490 is 9428.

It is an interprime number because it is at equal distance from previous prime (82487) and next prime (82493).

It can be written as a sum of positive squares in 4 ways, for example, as 43681 + 38809 = 209^2 + 197^2 .

It is not an unprimeable number, because it can be changed into a prime (82493) 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 in 7 ways as a sum of consecutive naturals, for example, 674 + ... + 786.

2⁸²⁴⁹⁰ is an apocalyptic number.

82490 is a deficient number, since it is larger than the sum of its proper divisors (69358).

82490 is a wasteful number, since it uses less digits than its factorization.

82490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 82490 is about 287.2107240338. The cubic root of 82490 is about 43.5311794782.

The spelling of 82490 in words is "eighty-two thousand, four hundred ninety".