520156020 has 96 divisors (see below), whose sum is σ = 1485993600. Its totient is φ = 135923200.

The previous prime is 520155943. The next prime is 520156031. The reversal of 520156020 is 20651025.

It is a congruent number.

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, 741670 + ... + 742370.

It is an arithmetic number, because the mean of its divisors is an integer number (15479100).

Almost surely, 2^520156020 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 520156020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742996800).

520156020 is an abundant number, since it is smaller than the sum of its proper divisors (965837580).

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

520156020 is a wasteful number, since it uses less digits than its factorization.

520156020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 520156020 is about 22806.9292102203. The cubic root of 520156020 is about 804.2255685004.

The spelling of 520156020 in words is "five hundred twenty million, one hundred fifty-six thousand, twenty".