82189888 has 28 divisors (see below), whose sum is σ = 177923952. Its totient is φ = 37358720.

The previous prime is 82189873. The next prime is 82189889. The reversal of 82189888 is 88898128.

It is not an unprimeable number, because it can be changed into a prime (82189889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57670 + ... + 59077.

Almost surely, 2^82189888 is an apocalyptic number.

82189888 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

82189888 is an abundant number, since it is smaller than the sum of its proper divisors (95734064).

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

82189888 is a wasteful number, since it uses less digits than its factorization.

82189888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116770 (or 116760 counting only the distinct ones).

The product of its digits is 589824, while the sum is 52.

The square root of 82189888 is about 9065.8638860287. The cubic root of 82189888 is about 434.7832416362.

It can be divided in two parts, 821 and 89888, that added together give a palindrome (90709).

The spelling of 82189888 in words is "eighty-two million, one hundred eighty-nine thousand, eight hundred eighty-eight".