82439072220 has 24 divisors (see below), whose sum is σ = 230829402384. Its totient is φ = 21983752576.

The previous prime is 82439072173. The next prime is 82439072227. The reversal of 82439072220 is 2227093428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82439072227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686992209 + ... + 686992328.

It is an arithmetic number, because the mean of its divisors is an integer number (9617891766).

Almost surely, 2^82439072220 is an apocalyptic number.

It is an amenable number.

82439072220 is an abundant number, since it is smaller than the sum of its proper divisors (148390330164).

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

82439072220 is a wasteful number, since it uses less digits than its factorization.

82439072220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373984549 (or 1373984547 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 82439072220 in words is "eighty-two billion, four hundred thirty-nine million, seventy-two thousand, two hundred twenty".