82713215 has 16 divisors (see below), whose sum is σ = 107503200. Its totient is φ = 60730752.

The previous prime is 82713181. The next prime is 82713217. The reversal of 82713215 is 51231728.

It is a cyclic number.

It is not a de Polignac number, because 82713215 - 2⁶ = 82713151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82713217) 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 15 ways as a sum of consecutive naturals, for example, 8081 + ... + 15189.

It is an arithmetic number, because the mean of its divisors is an integer number (6718950).

Almost surely, 2^82713215 is an apocalyptic number.

82713215 is a deficient number, since it is larger than the sum of its proper divisors (24789985).

82713215 is a wasteful number, since it uses less digits than its factorization.

82713215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7306.

The product of its digits is 3360, while the sum is 29.

The square root of 82713215 is about 9094.6805881240. The cubic root of 82713215 is about 435.7040872186.

It can be divided in two parts, 82713 and 215, that added together give a palindrome (82928).

The spelling of 82713215 in words is "eighty-two million, seven hundred thirteen thousand, two hundred fifteen".