82321173 has 24 divisors (see below), whose sum is σ = 131189760. Its totient is φ = 49325760.

The previous prime is 82321171. The next prime is 82321181. The reversal of 82321173 is 37112328.

It is not a de Polignac number, because 82321173 - 2¹ = 82321171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82321171) 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 23 ways as a sum of consecutive naturals, for example, 4140 + ... + 13482.

It is an arithmetic number, because the mean of its divisors is an integer number (5466240).

Almost surely, 2^82321173 is an apocalyptic number.

It is an amenable number.

82321173 is a deficient number, since it is larger than the sum of its proper divisors (48868587).

82321173 is a wasteful number, since it uses less digits than its factorization.

82321173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449 (or 9446 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 82321173 is about 9073.1016196227. The cubic root of 82321173 is about 435.0146170277.

The spelling of 82321173 in words is "eighty-two million, three hundred twenty-one thousand, one hundred seventy-three".