82308505 has 8 divisors (see below), whose sum is σ = 98880192. Its totient is φ = 65773488.

The previous prime is 82308497. The next prime is 82308511. The reversal of 82308505 is 50580328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82308505 - 2³ = 82308497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 3957 + ... + 13426.

It is an arithmetic number, because the mean of its divisors is an integer number (12360024).

Almost surely, 2^82308505 is an apocalyptic number.

It is an amenable number.

82308505 is a deficient number, since it is larger than the sum of its proper divisors (16571687).

82308505 is a wasteful number, since it uses less digits than its factorization.

82308505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18335.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 82308505 is about 9072.4034852954. The cubic root of 82308505 is about 434.9923017971.

The spelling of 82308505 in words is "eighty-two million, three hundred eight thousand, five hundred five".