538220 has 24 divisors (see below), whose sum is σ = 1197504. Its totient is φ = 202496.

The previous prime is 538201. The next prime is 538247. The reversal of 538220 is 22835.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a d-powerful number, because it can be written as 5⁴ + 3¹¹ + 2¹⁶ + 8⁵ + 2¹⁸ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 538192 and 538201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 1131.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2⁵³⁸²²⁰ is an apocalyptic number.

It is an amenable number.

538220 is an abundant number, since it is smaller than the sum of its proper divisors (659284).

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

538220 is a wasteful number, since it uses less digits than its factorization.

538220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609 (or 1607 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 538220 is about 733.6347865253. The cubic root of 538220 is about 81.3429547577.

The spelling of 538220 in words is "five hundred thirty-eight thousand, two hundred twenty".