82215386 has 24 divisors (see below), whose sum is σ = 141456672. Its totient is φ = 35743400.

The previous prime is 82215347. The next prime is 82215403. The reversal of 82215386 is 68351228.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1820 + ... + 12951.

It is an arithmetic number, because the mean of its divisors is an integer number (5894028).

Almost surely, 2^82215386 is an apocalyptic number.

82215386 is a deficient number, since it is larger than the sum of its proper divisors (59241286).

82215386 is a wasteful number, since it uses less digits than its factorization.

82215386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14818 (or 14807 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 82215386 is about 9067.2700411976. The cubic root of 82215386 is about 434.8281983299.

The spelling of 82215386 in words is "eighty-two million, two hundred fifteen thousand, three hundred eighty-six".