505830 has 32 divisors (see below), whose sum is σ = 1308384. Its totient is φ = 124416.

The previous prime is 505823. The next prime is 505867. The reversal of 505830 is 38505.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 505797 and 505806.

It is a congruent number.

It is an unprimeable number.

505830 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 15 ways as a sum of consecutive naturals, for example, 259 + ... + 1038.

It is an arithmetic number, because the mean of its divisors is an integer number (40887).

2⁵⁰⁵⁸³⁰ is an apocalyptic number.

505830 is an abundant number, since it is smaller than the sum of its proper divisors (802554).

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

505830 is a wasteful number, since it uses less digits than its factorization.

505830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 505830 is about 711.2172663821. The cubic root of 505830 is about 79.6773462649.

The spelling of 505830 in words is "five hundred five thousand, eight hundred thirty".