82400871 has 16 divisors (see below), whose sum is σ = 127155200. Its totient is φ = 46489248.

The previous prime is 82400869. The next prime is 82400893. The reversal of 82400871 is 17800428.

It is not a de Polignac number, because 82400871 - 2¹ = 82400869 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 (82400831) 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, 23176 + ... + 26493.

It is an arithmetic number, because the mean of its divisors is an integer number (7947200).

Almost surely, 2^82400871 is an apocalyptic number.

82400871 is a deficient number, since it is larger than the sum of its proper divisors (44754329).

82400871 is a wasteful number, since it uses less digits than its factorization.

82400871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49758.

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

The square root of 82400871 is about 9077.4925502586. The cubic root of 82400871 is about 435.1549560249.

The spelling of 82400871 in words is "eighty-two million, four hundred thousand, eight hundred seventy-one".