82109005 has 16 divisors (see below), whose sum is σ = 111196800. Its totient is φ = 57655360.

The previous prime is 82108991. The next prime is 82109017. The reversal of 82109005 is 50090128.

It is not a de Polignac number, because 82109005 - 2¹³ = 82100813 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 24145 + ... + 27334.

It is an arithmetic number, because the mean of its divisors is an integer number (6949800).

Almost surely, 2^82109005 is an apocalyptic number.

It is an amenable number.

82109005 is a deficient number, since it is larger than the sum of its proper divisors (29087795).

82109005 is a wasteful number, since it uses less digits than its factorization.

82109005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51524.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 82109005 is about 9061.4019334759. The cubic root of 82109005 is about 434.6405715507.

The spelling of 82109005 in words is "eighty-two million, one hundred nine thousand, five".