520000012 has 72 divisors (see below), whose sum is σ = 1114041600. Its totient is φ = 207995136.

The previous prime is 520000009. The next prime is 520000021. The reversal of 520000012 is 210000025.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1448289 + ... + 1448647.

It is an arithmetic number, because the mean of its divisors is an integer number (15472800).

Almost surely, 2^520000012 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 520000012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557020800).

520000012 is an abundant number, since it is smaller than the sum of its proper divisors (594041588).

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

520000012 is a wasteful number, since it uses less digits than its factorization.

520000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 520000012 is about 22803.5087651002. The cubic root of 520000012 is about 804.1451579035.

Adding to 520000012 its reverse (210000025), we get a palindrome (730000037).

The spelling of 520000012 in words is "five hundred twenty million, twelve", and thus it is an aban number.