82079620 has 96 divisors (see below), whose sum is σ = 211276800. Its totient is φ = 26158464.

The previous prime is 82079611. The next prime is 82079629. The reversal of 82079620 is 2697028.

It is an interprime number because it is at equal distance from previous prime (82079611) and next prime (82079629).

It is not an unprimeable number, because it can be changed into a prime (82079629) 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 31 ways as a sum of consecutive naturals, for example, 156679 + ... + 157201.

It is an arithmetic number, because the mean of its divisors is an integer number (2200800).

Almost surely, 2^82079620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82079620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105638400).

82079620 is an abundant number, since it is smaller than the sum of its proper divisors (129197180).

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

82079620 is a wasteful number, since it uses less digits than its factorization.

82079620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 82079620 is about 9059.7803505383. The cubic root of 82079620 is about 434.5887159428.

The spelling of 82079620 in words is "eighty-two million, seventy-nine thousand, six hundred twenty".