84181384 has 64 divisors (see below), whose sum is σ = 186157440. Its totient is φ = 34944000.

The previous prime is 84181369. The next prime is 84181387. The reversal of 84181384 is 48318148.

It is not an unprimeable number, because it can be changed into a prime (84181387) 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 15 ways as a sum of consecutive naturals, for example, 335259 + ... + 335509.

It is an arithmetic number, because the mean of its divisors is an integer number (2908710).

Almost surely, 2^84181384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84181384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93078720).

84181384 is an abundant number, since it is smaller than the sum of its proper divisors (101976056).

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

84181384 is a wasteful number, since it uses less digits than its factorization.

84181384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 426 counting only the distinct ones).

The product of its digits is 24576, while the sum is 37.

The square root of 84181384 is about 9175.0413623046. The cubic root of 84181384 is about 438.2669154219.

The spelling of 84181384 in words is "eighty-four million, one hundred eighty-one thousand, three hundred eighty-four".