538140 has 24 divisors (see below), whose sum is σ = 1506960. Its totient is φ = 143488.

The previous prime is 538127. The next prime is 538147. The reversal of 538140 is 41835.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 538140.

It is not an unprimeable number, because it can be changed into a prime (538147) by changing a digit.

538140 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, 4425 + ... + 4544.

It is an arithmetic number, because the mean of its divisors is an integer number (62790).

2⁵³⁸¹⁴⁰ is an apocalyptic number.

It is an amenable number.

538140 is an abundant number, since it is smaller than the sum of its proper divisors (968820).

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

538140 is a wasteful number, since it uses less digits than its factorization.

538140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8981 (or 8979 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 538140 is about 733.5802614575. The cubic root of 538140 is about 81.3389243372.

Adding to 538140 its reverse (41835), we get a palindrome (579975).

The spelling of 538140 in words is "five hundred thirty-eight thousand, one hundred forty".