82271861 has 8 divisors (see below), whose sum is σ = 97058304. Its totient is φ = 68243760.

The previous prime is 82271821. The next prime is 82271863. The reversal of 82271861 is 16817228.

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

It is a cyclic number.

It is not a de Polignac number, because 82271861 - 2²² = 78077557 is a prime.

It is a super-2 number, since 2×82271861² = 13537318224806642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82271863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189350 + ... + 189783.

It is an arithmetic number, because the mean of its divisors is an integer number (12132288).

Almost surely, 2^82271861 is an apocalyptic number.

It is an amenable number.

82271861 is a deficient number, since it is larger than the sum of its proper divisors (14786443).

82271861 is a wasteful number, since it uses less digits than its factorization.

82271861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379171.

The product of its digits is 10752, while the sum is 35.

The square root of 82271861 is about 9070.3837294791. The cubic root of 82271861 is about 434.9277389107.

The spelling of 82271861 in words is "eighty-two million, two hundred seventy-one thousand, eight hundred sixty-one".