520471020 has 96 divisors (see below), whose sum is σ = 1485872640. Its totient is φ = 136097280.

The previous prime is 520471001. The next prime is 520471043. The reversal of 520471020 is 20174025.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1449601 + ... + 1449959.

It is an arithmetic number, because the mean of its divisors is an integer number (15477840).

Almost surely, 2^520471020 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 520471020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742936320).

520471020 is an abundant number, since it is smaller than the sum of its proper divisors (965401620).

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

520471020 is a wasteful number, since it uses less digits than its factorization.

520471020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 520471020 is about 22813.8339609983. The cubic root of 520471020 is about 804.3878787326.

The spelling of 520471020 in words is "five hundred twenty million, four hundred seventy-one thousand, twenty".