82191344 has 20 divisors (see below), whose sum is σ = 162635424. Its totient is φ = 40220928.

The previous prime is 82191337. The next prime is 82191367. The reversal of 82191344 is 44319128.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 82191344.

It is a congruent 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, 53897 + ... + 55400.

Almost surely, 2^82191344 is an apocalyptic number.

It is an amenable number.

82191344 is a deficient number, since it is larger than the sum of its proper divisors (80444080).

82191344 is a wasteful number, since it uses less digits than its factorization.

82191344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109352 (or 109346 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 82191344 is about 9065.9441869008. The cubic root of 82191344 is about 434.7858090269.

The spelling of 82191344 in words is "eighty-two million, one hundred ninety-one thousand, three hundred forty-four".