84538 has 8 divisors (see below), whose sum is σ = 129888. Its totient is φ = 41244.

The previous prime is 84533. The next prime is 84551. The reversal of 84538 is 83548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (84533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406 + ... + 577.

It is an arithmetic number, because the mean of its divisors is an integer number (16236).

2⁸⁴⁵³⁸ is an apocalyptic number.

84538 is a deficient number, since it is larger than the sum of its proper divisors (45350).

84538 is a wasteful number, since it uses less digits than its factorization.

84538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028.

The product of its digits is 3840, while the sum is 28.

The square root of 84538 is about 290.7541917153. The cubic root of 84538 is about 43.8884917505. Note that the first 3 decimals are identical.

Subtracting from 84538 its reverse (83548), we obtain a triangular number (990 = T₄₄).

The spelling of 84538 in words is "eighty-four thousand, five hundred thirty-eight".