82731892 has 6 divisors (see below), whose sum is σ = 144780818. Its totient is φ = 41365944.

The previous prime is 82731863. The next prime is 82731893. The reversal of 82731892 is 29813728.

82731892 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 78747876 + 3984016 = 8874^2 + 1996^2 .

82731892 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82731893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10341483 + ... + 10341490.

Almost surely, 2^82731892 is an apocalyptic number.

It is an amenable number.

82731892 is a deficient number, since it is larger than the sum of its proper divisors (62048926).

82731892 is a wasteful number, since it uses less digits than its factorization.

82731892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20682977 (or 20682975 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 82731892 is about 9095.7073391793. The cubic root of 82731892 is about 435.7368793700.

The spelling of 82731892 in words is "eighty-two million, seven hundred thirty-one thousand, eight hundred ninety-two".