82216841 has 4 divisors (see below), whose sum is σ = 93962112. Its totient is φ = 70471572.

The previous prime is 82216831. The next prime is 82216843. The reversal of 82216841 is 14861228.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82216841 - 2²⁶ = 15107977 is a prime.

It is a super-3 number, since 3×82216841³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82216798 and 82216807.

It is not an unprimeable number, because it can be changed into a prime (82216843) 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, 5872625 + ... + 5872638.

It is an arithmetic number, because the mean of its divisors is an integer number (23490528).

Almost surely, 2^82216841 is an apocalyptic number.

It is an amenable number.

82216841 is a deficient number, since it is larger than the sum of its proper divisors (11745271).

82216841 is a wasteful number, since it uses less digits than its factorization.

82216841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11745270.

The product of its digits is 6144, while the sum is 32.

The square root of 82216841 is about 9067.3502744738. The cubic root of 82216841 is about 434.8307634268.

The spelling of 82216841 in words is "eighty-two million, two hundred sixteen thousand, eight hundred forty-one".