82809045 has 48 divisors (see below), whose sum is σ = 157652352. Its totient is φ = 39876480.

The previous prime is 82808977. The next prime is 82809059. The reversal of 82809045 is 54090828.

It is not a de Polignac number, because 82809045 - 2¹⁶ = 82743509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85152 + ... + 86118.

It is an arithmetic number, because the mean of its divisors is an integer number (3284424).

Almost surely, 2^82809045 is an apocalyptic number.

It is an amenable number.

82809045 is a deficient number, since it is larger than the sum of its proper divisors (74843307).

82809045 is a wasteful number, since it uses less digits than its factorization.

82809045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 82809045 is about 9099.9475273212. The cubic root of 82809045 is about 435.8722885074.

The spelling of 82809045 in words is "eighty-two million, eight hundred nine thousand, forty-five".