84530 has 16 divisors (see below), whose sum is σ = 155520. Its totient is φ = 33072.

The previous prime is 84523. The next prime is 84533. The reversal of 84530 is 3548.

It is not an unprimeable number, because it can be changed into a prime (84533) 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 7 ways as a sum of consecutive naturals, for example, 737 + ... + 843.

It is an arithmetic number, because the mean of its divisors is an integer number (9720).

2⁸⁴⁵³⁰ is an apocalyptic number.

84530 is a deficient number, since it is larger than the sum of its proper divisors (70990).

84530 is a wasteful number, since it uses less digits than its factorization.

84530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 84530 is about 290.7404340645. The cubic root of 84530 is about 43.8871072882.

The spelling of 84530 in words is "eighty-four thousand, five hundred thirty".