82216741 has 4 divisors (see below), whose sum is σ = 82407052. Its totient is φ = 82026432.

The previous prime is 82216721. The next prime is 82216831. The reversal of 82216741 is 14761228.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47748100 + 34468641 = 6910^2 + 5871^2 .

It is a cyclic number.

It is not a de Polignac number, because 82216741 - 2¹⁷ = 82085669 is a prime.

It is a super-2 number, since 2×82216741² = 13519185001322162, 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 (82216721) 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, 94506 + ... + 95371.

It is an arithmetic number, because the mean of its divisors is an integer number (20601763).

Almost surely, 2^82216741 is an apocalyptic number.

It is an amenable number.

82216741 is a deficient number, since it is larger than the sum of its proper divisors (190311).

82216741 is a wasteful number, since it uses less digits than its factorization.

82216741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190310.

The product of its digits is 5376, while the sum is 31.

The square root of 82216741 is about 9067.3447601820. The cubic root of 82216741 is about 434.8305871325.

Adding to 82216741 its reverse (14761228), we get a palindrome (96977969).

The spelling of 82216741 in words is "eighty-two million, two hundred sixteen thousand, seven hundred forty-one".