82191732 has 24 divisors (see below), whose sum is σ = 219178176. Its totient is φ = 23483328.

The previous prime is 82191721. The next prime is 82191737. The reversal of 82191732 is 23719128.

It is a junction number, because it is equal to n+sod(n) for n = 82191693 and 82191702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82191737) 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, 489153 + ... + 489320.

It is an arithmetic number, because the mean of its divisors is an integer number (9132424).

Almost surely, 2^82191732 is an apocalyptic number.

It is an amenable number.

82191732 is an abundant number, since it is smaller than the sum of its proper divisors (136986444).

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

82191732 is a wasteful number, since it uses less digits than its factorization.

82191732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978487 (or 978485 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 82191732 is about 9065.9655856395. The cubic root of 82191732 is about 434.7864931891.

The spelling of 82191732 in words is "eighty-two million, one hundred ninety-one thousand, seven hundred thirty-two".