538020 has 108 divisors (see below), whose sum is σ = 1929564. Its totient is φ = 120960.

The previous prime is 538019. The next prime is 538049. The reversal of 538020 is 20835.

It can be written as a sum of positive squares in 2 ways, for example, as 86436 + 451584 = 294^2 + 672^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 537984 and 538002.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8790 + ... + 8850.

2⁵³⁸⁰²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964782).

538020 is an abundant number, since it is smaller than the sum of its proper divisors (1391544).

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

538020 is a wasteful number, since it uses less digits than its factorization.

538020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 538020 is about 733.4984662561. The cubic root of 538020 is about 81.3328779574.

538020 divided by its sum of digits (18) gives a triangular number (29890 = T₂₄₄).

Adding to 538020 its reverse (20835), we get a palindrome (558855).

It can be divided in two parts, 5 and 38020, that added together give a square (38025 = 195²).

The spelling of 538020 in words is "five hundred thirty-eight thousand, twenty".