520330420 has 24 divisors (see below), whose sum is σ = 1115944704. Its totient is φ = 203703456.

The previous prime is 520330399. The next prime is 520330423. The reversal of 520330420 is 24033025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520330423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275832 + ... + 277711.

It is an arithmetic number, because the mean of its divisors is an integer number (46497696).

Almost surely, 2^520330420 is an apocalyptic number.

It is an amenable number.

520330420 is an abundant number, since it is smaller than the sum of its proper divisors (595614284).

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

520330420 is a wasteful number, since it uses less digits than its factorization.

520330420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553599 (or 553597 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 520330420 is about 22810.7522892166. The cubic root of 520330420 is about 804.3154397834.

Adding to 520330420 its reverse (24033025), we get a palindrome (544363445).

The spelling of 520330420 in words is "five hundred twenty million, three hundred thirty thousand, four hundred twenty".