538320 has 40 divisors (see below), whose sum is σ = 1669536. Its totient is φ = 143488.

The previous prime is 538309. The next prime is 538331. The reversal of 538320 is 23835.

It is an interprime number because it is at equal distance from previous prime (538309) and next prime (538331).

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

538320 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882 + ... + 1361.

2⁵³⁸³²⁰ is an apocalyptic number.

It is an amenable number.

538320 is an abundant number, since it is smaller than the sum of its proper divisors (1131216).

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

538320 is a wasteful number, since it uses less digits than its factorization.

538320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 538320 is about 733.7029371619. The cubic root of 538320 is about 81.3479922218.

It can be divided in two parts, 538 and 320, that added together give a palindrome (858).

The spelling of 538320 in words is "five hundred thirty-eight thousand, three hundred twenty".