520965420 has 24 divisors (see below), whose sum is σ = 1458703344. Its totient is φ = 138924096.

The previous prime is 520965397. The next prime is 520965463. The reversal of 520965420 is 24569025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4341319 + ... + 4341438.

It is an arithmetic number, because the mean of its divisors is an integer number (60779306).

Almost surely, 2^520965420 is an apocalyptic number.

It is an amenable number.

520965420 is an abundant number, since it is smaller than the sum of its proper divisors (937737924).

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

520965420 is a wasteful number, since it uses less digits than its factorization.

520965420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682769 (or 8682767 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 520965420 is about 22824.6669198041. Note that the first 3 decimals coincide. The cubic root of 520965420 is about 804.6424965022.

The spelling of 520965420 in words is "five hundred twenty million, nine hundred sixty-five thousand, four hundred twenty".