520246020 has 48 divisors (see below), whose sum is σ = 1664788608. Its totient is φ = 118913280.

The previous prime is 520245997. The next prime is 520246021. The reversal of 520246020 is 20642025.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (520246021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618921 + ... + 619760.

It is an arithmetic number, because the mean of its divisors is an integer number (34683096).

Almost surely, 2^520246020 is an apocalyptic number.

It is an amenable number.

520246020 is an abundant number, since it is smaller than the sum of its proper divisors (1144542588).

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

520246020 is a wasteful number, since it uses less digits than its factorization.

520246020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238700 (or 1238698 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 520246020 is about 22808.9022094445. The cubic root of 520246020 is about 804.2719495375.

Adding to 520246020 its reverse (20642025), we get a palindrome (540888045).

The spelling of 520246020 in words is "five hundred twenty million, two hundred forty-six thousand, twenty".