520380 has 108 divisors (see below), whose sum is σ = 1867320. Its totient is φ = 116928.

The previous prime is 520379. The next prime is 520381. The reversal of 520380 is 83025.

It is an interprime number because it is at equal distance from previous prime (520379) and next prime (520381).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520381) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8791 + ... + 8849.

It is an arithmetic number, because the mean of its divisors is an integer number (17290).

2⁵²⁰³⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933660).

520380 is an abundant number, since it is smaller than the sum of its proper divisors (1346940).

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

520380 is a wasteful number, since it uses less digits than its factorization.

520380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 520380 is about 721.3736895673. The cubic root of 520380 is about 80.4340985534.

It can be divided in two parts, 520 and 380, that added together give a square (900 = 30²).

The spelling of 520380 in words is "five hundred twenty thousand, three hundred eighty".