520398 has 32 divisors (see below), whose sum is σ = 1209600. Its totient is φ = 165528.

The previous prime is 520393. The next prime is 520409. The reversal of 520398 is 893025.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1033 + ... + 1451.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2⁵²⁰³⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604800).

520398 is an abundant number, since it is smaller than the sum of its proper divisors (689202).

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

520398 is a wasteful number, since it uses less digits than its factorization.

520398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 520398 is about 721.3861656561. The cubic root of 520398 is about 80.4350259507.

The spelling of 520398 in words is "five hundred twenty thousand, three hundred ninety-eight".