82020869 has 16 divisors (see below), whose sum is σ = 101678976. Its totient is φ = 64550400.

The previous prime is 82020859. The next prime is 82020877. The reversal of 82020869 is 96802028.

It is not a de Polignac number, because 82020869 - 2²⁴ = 65243653 is a prime.

It is a super-2 number, since 2×82020869² = 13454845903030322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82020859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3527 + ... + 13284.

It is an arithmetic number, because the mean of its divisors is an integer number (6354936).

Almost surely, 2^82020869 is an apocalyptic number.

It is an amenable number.

82020869 is a deficient number, since it is larger than the sum of its proper divisors (19658107).

82020869 is a wasteful number, since it uses less digits than its factorization.

82020869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16876.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 82020869 is about 9056.5373625906. The cubic root of 82020869 is about 434.4850011353.

The spelling of 82020869 in words is "eighty-two million, twenty thousand, eight hundred sixty-nine".