82336821 has 16 divisors (see below), whose sum is σ = 126641664. Its totient is φ = 46608624.

The previous prime is 82336819. The next prime is 82336901. The reversal of 82336821 is 12863328.

It is not a de Polignac number, because 82336821 - 2¹ = 82336819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82336421) 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 15 ways as a sum of consecutive naturals, for example, 16075 + ... + 20568.

It is an arithmetic number, because the mean of its divisors is an integer number (7915104).

Almost surely, 2^82336821 is an apocalyptic number.

It is an amenable number.

82336821 is a deficient number, since it is larger than the sum of its proper divisors (44304843).

82336821 is a wasteful number, since it uses less digits than its factorization.

82336821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36760.

The product of its digits is 13824, while the sum is 33.

The square root of 82336821 is about 9073.9639077969. The cubic root of 82336821 is about 435.0421784970.

The spelling of 82336821 in words is "eighty-two million, three hundred thirty-six thousand, eight hundred twenty-one".