82078 has 4 divisors (see below), whose sum is σ = 123120. Its totient is φ = 41038.

The previous prime is 82073. The next prime is 82129. The reversal of 82078 is 87028.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82073) 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, 20518 + ... + 20521.

It is an arithmetic number, because the mean of its divisors is an integer number (30780).

2⁸²⁰⁷⁸ is an apocalyptic number.

82078 is a deficient number, since it is larger than the sum of its proper divisors (41042).

82078 is a wasteful number, since it uses less digits than its factorization.

82078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41041.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 82078 is about 286.4925828010. The cubic root of 82078 is about 43.4585856774.

Subtracting 82078 from its reverse (87028), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 8207 and 8, that multiplied together give a palindrome (65656).

The spelling of 82078 in words is "eighty-two thousand, seventy-eight".