523830 has 32 divisors (see below), whose sum is σ = 1324800. Its totient is φ = 132192.

The previous prime is 523829. The next prime is 523847. The reversal of 523830 is 38325.

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

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 523797 and 523806.

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 523830.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111 + ... + 1029.

It is an arithmetic number, because the mean of its divisors is an integer number (41400).

2⁵²³⁸³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662400).

523830 is an abundant number, since it is smaller than the sum of its proper divisors (800970).

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

523830 is a wasteful number, since it uses less digits than its factorization.

523830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948.

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

The square root of 523830 is about 723.7610102789. The cubic root of 523830 is about 80.6114603789.

The spelling of 523830 in words is "five hundred twenty-three thousand, eight hundred thirty".