82021616 has 10 divisors (see below), whose sum is σ = 158916912. Its totient is φ = 41010800.

The previous prime is 82021603. The next prime is 82021619. The reversal of 82021616 is 61612028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82021619) 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 as a sum of consecutive naturals, namely, 2563160 + ... + 2563191.

Almost surely, 2^82021616 is an apocalyptic number.

It is an amenable number.

82021616 is a deficient number, since it is larger than the sum of its proper divisors (76895296).

82021616 is a wasteful number, since it uses less digits than its factorization.

82021616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126359 (or 5126353 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 82021616 is about 9056.5786034241. The cubic root of 82021616 is about 434.4863201464.

The spelling of 82021616 in words is "eighty-two million, twenty-one thousand, six hundred sixteen".