520012340 has 24 divisors (see below), whose sum is σ = 1129683240. Its totient is φ = 200832128.

The previous prime is 520012333. The next prime is 520012343. The reversal of 520012340 is 43210025.

It can be written as a sum of positive squares in 4 ways, for example, as 1175056 + 518837284 = 1084^2 + 22778^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520012343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447707 + ... + 448866.

It is an arithmetic number, because the mean of its divisors is an integer number (47070135).

Almost surely, 2^520012340 is an apocalyptic number.

It is an amenable number.

520012340 is an abundant number, since it is smaller than the sum of its proper divisors (609670900).

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

520012340 is a wasteful number, since it uses less digits than its factorization.

520012340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896611 (or 896609 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 520012340 is about 22803.7790727765. The cubic root of 520012340 is about 804.1515126618.

Adding to 520012340 its reverse (43210025), we get a palindrome (563222365).

The spelling of 520012340 in words is "five hundred twenty million, twelve thousand, three hundred forty".