82239580 has 24 divisors (see below), whose sum is σ = 172907280. Its totient is φ = 32856960.

The previous prime is 82239551. The next prime is 82239587. The reversal of 82239580 is 8593228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82239587) 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, 19936 + ... + 23704.

It is an arithmetic number, because the mean of its divisors is an integer number (7204470).

Almost surely, 2^82239580 is an apocalyptic number.

It is an amenable number.

82239580 is an abundant number, since it is smaller than the sum of its proper divisors (90667700).

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

82239580 is a wasteful number, since it uses less digits than its factorization.

82239580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4869 (or 4867 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 82239580 is about 9068.6040822168. The cubic root of 82239580 is about 434.8708472880.

The spelling of 82239580 in words is "eighty-two million, two hundred thirty-nine thousand, five hundred eighty".