84185920 has 224 divisors, whose sum is σ = 256032000. Its totient is φ = 26191872.

The previous prime is 84185891. The next prime is 84185947. The reversal of 84185920 is 2958148.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 84185920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1426851 + ... + 1426909.

It is an arithmetic number, because the mean of its divisors is an integer number (1143000).

Almost surely, 2^84185920 is an apocalyptic number.

84185920 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 84185920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128016000).

84185920 is an abundant number, since it is smaller than the sum of its proper divisors (171846080).

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

84185920 is a wasteful number, since it uses less digits than its factorization.

84185920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 84185920 is about 9175.2885513209. The cubic root of 84185920 is about 438.2747870871.

The spelling of 84185920 in words is "eighty-four million, one hundred eighty-five thousand, nine hundred twenty".