978534 has 16 divisors (see below), whose sum is σ = 2174640. Its totient is φ = 326160.

The previous prime is 978521. The next prime is 978541. The reversal of 978534 is 435879.

978534 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9007 + ... + 9114.

It is an arithmetic number, because the mean of its divisors is an integer number (135915).

2⁹⁷⁸⁵³⁴ is an apocalyptic number.

978534 is an abundant number, since it is smaller than the sum of its proper divisors (1196106).

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

978534 is a wasteful number, since it uses less digits than its factorization.

978534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18132 (or 18126 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 978534 is about 989.2087747286. The cubic root of 978534 is about 99.2792848420.

The spelling of 978534 in words is "nine hundred seventy-eight thousand, five hundred thirty-four".