82678842 has 48 divisors (see below), whose sum is σ = 189933120. Its totient is φ = 25920000.

The previous prime is 82678819. The next prime is 82678853. The reversal of 82678842 is 24887628.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50842 + ... + 52442.

It is an arithmetic number, because the mean of its divisors is an integer number (3956940).

Almost surely, 2^82678842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82678842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94966560).

82678842 is an abundant number, since it is smaller than the sum of its proper divisors (107254278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82678842 is a wasteful number, since it uses less digits than its factorization.

82678842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1776 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 82678842 is about 9092.7906607378. The cubic root of 82678842 is about 435.6437239032.

The spelling of 82678842 in words is "eighty-two million, six hundred seventy-eight thousand, eight hundred forty-two".