520071020 has 48 divisors (see below), whose sum is σ = 1249577280. Its totient is φ = 178109184.

The previous prime is 520070981. The next prime is 520071031. The reversal of 520071020 is 20170025.

It is a self number, because there is not a number n which added to its sum of digits gives 520071020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177326 + ... + 180234.

It is an arithmetic number, because the mean of its divisors is an integer number (26032860).

Almost surely, 2^520071020 is an apocalyptic number.

It is an amenable number.

520071020 is an abundant number, since it is smaller than the sum of its proper divisors (729506260).

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

520071020 is a wasteful number, since it uses less digits than its factorization.

520071020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4202 (or 4200 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 520071020 is about 22805.0656653297. The cubic root of 520071020 is about 804.1817592748.

The spelling of 520071020 in words is "five hundred twenty million, seventy-one thousand, twenty".