82090945 has 8 divisors (see below), whose sum is σ = 101687040. Its totient is φ = 63554160.

The previous prime is 82090937. The next prime is 82090949. The reversal of 82090945 is 54909028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82090945 - 2³ = 82090937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82090949) 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 7 ways as a sum of consecutive naturals, for example, 264655 + ... + 264964.

It is an arithmetic number, because the mean of its divisors is an integer number (12710880).

Almost surely, 2^82090945 is an apocalyptic number.

It is an amenable number.

82090945 is a deficient number, since it is larger than the sum of its proper divisors (19596095).

82090945 is a wasteful number, since it uses less digits than its factorization.

82090945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529655.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 82090945 is about 9060.4053441333. The cubic root of 82090945 is about 434.6087025967.

The spelling of 82090945 in words is "eighty-two million, ninety thousand, nine hundred forty-five".