82478 has 16 divisors (see below), whose sum is σ = 141696. Its totient is φ = 35640.

The previous prime is 82471. The next prime is 82483. The reversal of 82478 is 87428.

It is a self number, because there is not a number n which added to its sum of digits gives 82478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82471) 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, 425 + ... + 587.

It is an arithmetic number, because the mean of its divisors is an integer number (8856).

2⁸²⁴⁷⁸ is an apocalyptic number.

82478 is a deficient number, since it is larger than the sum of its proper divisors (59218).

82478 is a wasteful number, since it uses less digits than its factorization.

82478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199.

The product of its digits is 3584, while the sum is 29.

The square root of 82478 is about 287.1898326891. The cubic root of 82478 is about 43.5290685173.

Subtracting 82478 from its reverse (87428), we obtain a triangular number (4950 = T₉₉).

The spelling of 82478 in words is "eighty-two thousand, four hundred seventy-eight".