82189028 has 12 divisors (see below), whose sum is σ = 150084480. Its totient is φ = 39307752.

The previous prime is 82189027. The next prime is 82189043. The reversal of 82189028 is 82098128.

It is a junction number, because it is equal to n+sod(n) for n = 82188982 and 82189000.

It is not an unprimeable number, because it can be changed into a prime (82189027) 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 3 ways as a sum of consecutive naturals, for example, 446588 + ... + 446771.

It is an arithmetic number, because the mean of its divisors is an integer number (12507040).

Almost surely, 2^82189028 is an apocalyptic number.

It is an amenable number.

82189028 is a deficient number, since it is larger than the sum of its proper divisors (67895452).

82189028 is a wasteful number, since it uses less digits than its factorization.

82189028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893386 (or 893384 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 82189028 is about 9065.8164552345. The cubic root of 82189028 is about 434.7817251686.

The spelling of 82189028 in words is "eighty-two million, one hundred eighty-nine thousand, twenty-eight".