82372385 has 4 divisors (see below), whose sum is σ = 98846868. Its totient is φ = 65897904.

The previous prime is 82372357. The next prime is 82372417. The reversal of 82372385 is 58327328.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23512801 + 58859584 = 4849^2 + 7672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82372385 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8237234 + ... + 8237243.

It is an arithmetic number, because the mean of its divisors is an integer number (24711717).

Almost surely, 2^82372385 is an apocalyptic number.

It is an amenable number.

82372385 is a deficient number, since it is larger than the sum of its proper divisors (16474483).

82372385 is a wasteful number, since it uses less digits than its factorization.

82372385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16474482.

The product of its digits is 80640, while the sum is 38.

The square root of 82372385 is about 9075.9233690022. The cubic root of 82372385 is about 435.1048058561.

The spelling of 82372385 in words is "eighty-two million, three hundred seventy-two thousand, three hundred eighty-five".