520005712 has 40 divisors (see below), whose sum is σ = 1054557504. Its totient is φ = 247931904.

The previous prime is 520005701. The next prime is 520005719. The reversal of 520005712 is 217500025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520005719) 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, 127903 + ... + 131905.

Almost surely, 2^520005712 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 520005712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527278752).

520005712 is an abundant number, since it is smaller than the sum of its proper divisors (534551792).

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

520005712 is a wasteful number, since it uses less digits than its factorization.

520005712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387 (or 4381 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 520005712 is about 22803.6337455240. The cubic root of 520005712 is about 804.1480961154.

Adding to 520005712 its reverse (217500025), we get a palindrome (737505737).

The spelling of 520005712 in words is "five hundred twenty million, five thousand, seven hundred twelve".