538730 has 16 divisors (see below), whose sum is σ = 1027080. Its totient is φ = 202752.

The previous prime is 538723. The next prime is 538739. The reversal of 538730 is 37835.

It can be written as a sum of positive squares in 4 ways, for example, as 528529 + 10201 = 727^2 + 101^2 .

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 538730.

It is not an unprimeable number, because it can be changed into a prime (538739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1415 + ... + 1754.

2⁵³⁸⁷³⁰ is an apocalyptic number.

538730 is a deficient number, since it is larger than the sum of its proper divisors (488350).

538730 is a wasteful number, since it uses less digits than its factorization.

538730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 538730 is about 733.9822886147. The cubic root of 538730 is about 81.3686393047.

Adding to 538730 its sum of digits (26), we get a square (538756 = 734²).

The spelling of 538730 in words is "five hundred thirty-eight thousand, seven hundred thirty".