82004871 has 16 divisors (see below), whose sum is σ = 118200320. Its totient is φ = 50271840.

The previous prime is 82004869. The next prime is 82004899. The reversal of 82004871 is 17840028.

It is not a de Polignac number, because 82004871 - 2¹ = 82004869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82004771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6690 + ... + 14448.

It is an arithmetic number, because the mean of its divisors is an integer number (7387520).

Almost surely, 2^82004871 is an apocalyptic number.

82004871 is a deficient number, since it is larger than the sum of its proper divisors (36195449).

82004871 is a wasteful number, since it uses less digits than its factorization.

82004871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8046.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 82004871 is about 9055.6540901251. The cubic root of 82004871 is about 434.4567508331.

Adding to 82004871 its reverse (17840028), we get a palindrome (99844899).

The spelling of 82004871 in words is "eighty-two million, four thousand, eight hundred seventy-one".