538420 has 12 divisors (see below), whose sum is σ = 1130724. Its totient is φ = 215360.

The previous prime is 538411. The next prime is 538423. The reversal of 538420 is 24835.

It can be written as a sum of positive squares in 2 ways, for example, as 417316 + 121104 = 646^2 + 348^2 .

It is a junction number, because it is equal to n+sod(n) for n = 538391 and 538400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13441 + ... + 13480.

It is an arithmetic number, because the mean of its divisors is an integer number (94227).

2⁵³⁸⁴²⁰ is an apocalyptic number.

It is an amenable number.

538420 is an abundant number, since it is smaller than the sum of its proper divisors (592304).

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

538420 is a wasteful number, since it uses less digits than its factorization.

538420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26930 (or 26928 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 538420 is about 733.7710814689. The cubic root of 538420 is about 81.3530290621.

The spelling of 538420 in words is "five hundred thirty-eight thousand, four hundred twenty".