82922281 has 8 divisors (see below), whose sum is σ = 92380680. Its totient is φ = 73903872.

The previous prime is 82922239. The next prime is 82922297. The reversal of 82922281 is 18222928.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 403225 + 82519056 = 635^2 + 9084^2 .

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 82922281 - 2¹⁹ = 82397993 is a prime.

It is a super-2 number, since 2×82922281² = 13752209372485922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82920281) 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 7 ways as a sum of consecutive naturals, for example, 109600 + ... + 110353.

It is an arithmetic number, because the mean of its divisors is an integer number (11547585).

Almost surely, 2^82922281 is an apocalyptic number.

It is an amenable number.

82922281 is a deficient number, since it is larger than the sum of its proper divisors (9458399).

82922281 is a wasteful number, since it uses less digits than its factorization.

82922281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219995.

The product of its digits is 9216, while the sum is 34.

The square root of 82922281 is about 9106.1671959173. The cubic root of 82922281 is about 436.0708737155.

The spelling of 82922281 in words is "eighty-two million, nine hundred twenty-two thousand, two hundred eighty-one".