78534 has 12 divisors (see below), whose sum is σ = 170196. Its totient is φ = 26172.

The previous prime is 78517. The next prime is 78539. The reversal of 78534 is 43587.

It is a junction number, because it is equal to n+sod(n) for n = 78498 and 78507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78539) by changing a digit.

78534 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2164 + ... + 2199.

It is an arithmetic number, because the mean of its divisors is an integer number (14183).

2⁷⁸⁵³⁴ is an apocalyptic number.

78534 is an abundant number, since it is smaller than the sum of its proper divisors (91662).

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

78534 is a wasteful number, since it uses less digits than its factorization.

78534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371 (or 4368 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 78534 is about 280.2391835558. The cubic root of 78534 is about 42.8238694119.

The spelling of 78534 in words is "seventy-eight thousand, five hundred thirty-four".