82118330 has 64 divisors (see below), whose sum is σ = 180444672. Its totient is φ = 26265600.

The previous prime is 82118329. The next prime is 82118363. The reversal of 82118330 is 3381128.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82118330.

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 31 ways as a sum of consecutive naturals, for example, 179462 + ... + 179918.

It is an arithmetic number, because the mean of its divisors is an integer number (2819448).

Almost surely, 2^82118330 is an apocalyptic number.

82118330 is an abundant number, since it is smaller than the sum of its proper divisors (98326342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82118330 is a wasteful number, since it uses less digits than its factorization.

82118330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 82118330 is about 9061.9164639716. The cubic root of 82118330 is about 434.6570247599.

Adding to 82118330 its reverse (3381128), we get a palindrome (85499458).

The spelling of 82118330 in words is "eighty-two million, one hundred eighteen thousand, three hundred thirty".