538530 has 32 divisors (see below), whose sum is σ = 1339200. Its totient is φ = 138432.

The previous prime is 538529. The next prime is 538553. The reversal of 538530 is 35835.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 538530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (41850).

2⁵³⁸⁵³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669600).

538530 is an abundant number, since it is smaller than the sum of its proper divisors (800670).

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

538530 is a wasteful number, since it uses less digits than its factorization.

538530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 538530 is about 733.8460328979. The cubic root of 538530 is about 81.3585688661.

The spelling of 538530 in words is "five hundred thirty-eight thousand, five hundred thirty".