84189680 has 40 divisors (see below), whose sum is σ = 197017152. Its totient is φ = 33456384.

The previous prime is 84189653. The next prime is 84189691. The reversal of 84189680 is 8698148.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9209 + ... + 15911.

Almost surely, 2^84189680 is an apocalyptic number.

84189680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84189680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98508576).

84189680 is an abundant number, since it is smaller than the sum of its proper divisors (112827472).

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

84189680 is a wasteful number, since it uses less digits than its factorization.

84189680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873 (or 6867 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 84189680 is about 9175.4934472212. The cubic root of 84189680 is about 438.2813118863.

The spelling of 84189680 in words is "eighty-four million, one hundred eighty-nine thousand, six hundred eighty".