520152020 has 24 divisors (see below), whose sum is σ = 1103138568. Its totient is φ = 206000000.

The previous prime is 520152013. The next prime is 520152023. The reversal of 520152020 is 20251025.

It can be written as a sum of positive squares in 4 ways, for example, as 70627216 + 449524804 = 8404^2 + 21202^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520152020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520152023) 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, 126731 + ... + 130770.

It is an arithmetic number, because the mean of its divisors is an integer number (45964107).

Almost surely, 2^520152020 is an apocalyptic number.

It is an amenable number.

520152020 is an abundant number, since it is smaller than the sum of its proper divisors (582986548).

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

520152020 is a wasteful number, since it uses less digits than its factorization.

520152020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257611 (or 257609 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 520152020 is about 22806.8415174044. The cubic root of 520152020 is about 804.2235069968.

The spelling of 520152020 in words is "five hundred twenty million, one hundred fifty-two thousand, twenty".