82380445 has 16 divisors (see below), whose sum is σ = 116876160. Its totient is φ = 54540864.

The previous prime is 82380379. The next prime is 82380449. The reversal of 82380445 is 54408328.

It is not a de Polignac number, because 82380445 - 2⁹ = 82379933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82380445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82380449) 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 15 ways as a sum of consecutive naturals, for example, 39567 + ... + 41596.

It is an arithmetic number, because the mean of its divisors is an integer number (7304760).

Almost surely, 2^82380445 is an apocalyptic number.

It is an amenable number.

82380445 is a deficient number, since it is larger than the sum of its proper divisors (34495715).

82380445 is a wasteful number, since it uses less digits than its factorization.

82380445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81204.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 82380445 is about 9076.3673900961. The cubic root of 82380445 is about 435.1189968190.

The spelling of 82380445 in words is "eighty-two million, three hundred eighty thousand, four hundred forty-five".