520258420 has 48 divisors (see below), whose sum is σ = 1199834496. Its totient is φ = 187920000.

The previous prime is 520258379. The next prime is 520258439. The reversal of 520258420 is 24852025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25390 + ... + 41050.

It is an arithmetic number, because the mean of its divisors is an integer number (24996552).

Almost surely, 2^520258420 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 520258420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599917248).

520258420 is an abundant number, since it is smaller than the sum of its proper divisors (679576076).

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

520258420 is a wasteful number, since it uses less digits than its factorization.

520258420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15832 (or 15830 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 520258420 is about 22809.1740315164. The cubic root of 520258420 is about 804.2783393944.

The spelling of 520258420 in words is "five hundred twenty million, two hundred fifty-eight thousand, four hundred twenty".