82820297 has 8 divisors (see below), whose sum is σ = 99633600. Its totient is φ = 67252464.

The previous prime is 82820281. The next prime is 82820321. The reversal of 82820297 is 79202828.

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 82820297 - 2⁴ = 82820281 is a prime.

It is a super-3 number, since 3×82820297³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82820297.

It is not an unprimeable number, because it can be changed into a prime (82820237) 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, 311222 + ... + 311487.

It is an arithmetic number, because the mean of its divisors is an integer number (12454200).

Almost surely, 2^82820297 is an apocalyptic number.

It is an amenable number.

82820297 is a deficient number, since it is larger than the sum of its proper divisors (16813303).

82820297 is a wasteful number, since it uses less digits than its factorization.

82820297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622735.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 82820297 is about 9100.5657516442. The cubic root of 82820297 is about 435.8920295589.

The spelling of 82820297 in words is "eighty-two million, eight hundred twenty thousand, two hundred ninety-seven".