82978616 has 32 divisors (see below), whose sum is σ = 179820000. Its totient is φ = 35160576.

The previous prime is 82978601. The next prime is 82978619. The reversal of 82978616 is 61687928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82978619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3341 + ... + 13308.

It is an arithmetic number, because the mean of its divisors is an integer number (5619375).

Almost surely, 2^82978616 is an apocalyptic number.

It is an amenable number.

82978616 is an abundant number, since it is smaller than the sum of its proper divisors (96841384).

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

82978616 is a wasteful number, since it uses less digits than its factorization.

82978616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16751 (or 16747 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 82978616 is about 9109.2599040756. The cubic root of 82978616 is about 436.1696026752.

The spelling of 82978616 in words is "eighty-two million, nine hundred seventy-eight thousand, six hundred sixteen".