82440871 has 8 divisors (see below), whose sum is σ = 88487424. Its totient is φ = 76527360.

The previous prime is 82440863. The next prime is 82440893. The reversal of 82440871 is 17804428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82440871 - 2³ = 82440863 is a prime.

It is a super-2 number, since 2×82440871² = 13592994422477282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82440851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31975 + ... + 34456.

It is an arithmetic number, because the mean of its divisors is an integer number (11060928).

Almost surely, 2^82440871 is an apocalyptic number.

82440871 is a deficient number, since it is larger than the sum of its proper divisors (6046553).

82440871 is a wasteful number, since it uses less digits than its factorization.

82440871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66521.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 82440871 is about 9079.6955345430. The cubic root of 82440871 is about 435.2253573135.

The spelling of 82440871 in words is "eighty-two million, four hundred forty thousand, eight hundred seventy-one".