82978662 has 96 divisors (see below), whose sum is σ = 195004800. Its totient is φ = 23452416.

The previous prime is 82978631. The next prime is 82978673. The reversal of 82978662 is 26687928.

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 47 ways as a sum of consecutive naturals, for example, 1136658 + ... + 1136730.

It is an arithmetic number, because the mean of its divisors is an integer number (2031300).

Almost surely, 2^82978662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82978662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97502400).

82978662 is an abundant number, since it is smaller than the sum of its proper divisors (112026138).

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

82978662 is a wasteful number, since it uses less digits than its factorization.

82978662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 169 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 82978662 is about 9109.2624289785. The cubic root of 82978662 is about 436.1696832734.

The spelling of 82978662 in words is "eighty-two million, nine hundred seventy-eight thousand, six hundred sixty-two".