82438 has 8 divisors (see below), whose sum is σ = 126432. Its totient is φ = 40296.

The previous prime is 82421. The next prime is 82457. The reversal of 82438 is 83428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

82438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345 + ... + 532.

It is an arithmetic number, because the mean of its divisors is an integer number (15804).

2⁸²⁴³⁸ is an apocalyptic number.

82438 is a deficient number, since it is larger than the sum of its proper divisors (43994).

82438 is a wasteful number, since it uses less digits than its factorization.

82438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926.

The product of its digits is 1536, while the sum is 25.

The square root of 82438 is about 287.1201838952. The cubic root of 82438 is about 43.5220305020.

Subtracting 82438 from its reverse (83428), we obtain a triangular number (990 = T₄₄).

The spelling of 82438 in words is "eighty-two thousand, four hundred thirty-eight".