84189568 has 32 divisors (see below), whose sum is σ = 175019760. Its totient is φ = 40263168.

The previous prime is 84189563. The next prime is 84189569. The reversal of 84189568 is 86598148.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84189563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11355 + ... + 17242.

Almost surely, 2^84189568 is an apocalyptic number.

It is an amenable number.

84189568 is an abundant number, since it is smaller than the sum of its proper divisors (90830192).

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

84189568 is a wasteful number, since it uses less digits than its factorization.

84189568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28634 (or 28622 counting only the distinct ones).

The product of its digits is 552960, while the sum is 49.

The square root of 84189568 is about 9175.4873440052. The cubic root of 84189568 is about 438.2811175334.

It can be divided in two parts, 841 and 89568, that added together give a palindrome (90409).

The spelling of 84189568 in words is "eighty-four million, one hundred eighty-nine thousand, five hundred sixty-eight".