82145732 has 12 divisors (see below), whose sum is σ = 145724796. Its totient is φ = 40510080.

The previous prime is 82145731. The next prime is 82145761. The reversal of 82145732 is 23754128.

It can be written as a sum of positive squares in 2 ways, for example, as 38241856 + 43903876 = 6184^2 + 6626^2 .

It is not an unprimeable number, because it can be changed into a prime (82145731) 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 3 ways as a sum of consecutive naturals, for example, 140369 + ... + 140952.

It is an arithmetic number, because the mean of its divisors is an integer number (12143733).

Almost surely, 2^82145732 is an apocalyptic number.

It is an amenable number.

82145732 is a deficient number, since it is larger than the sum of its proper divisors (63579064).

82145732 is a wasteful number, since it uses less digits than its factorization.

82145732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281398 (or 281396 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 82145732 is about 9063.4282697002. The cubic root of 82145732 is about 434.7053661685.

The spelling of 82145732 in words is "eighty-two million, one hundred forty-five thousand, seven hundred thirty-two".