520334724 has 72 divisors (see below), whose sum is σ = 1521000768. Its totient is φ = 137229120.

The previous prime is 520334723. The next prime is 520334743. The reversal of 520334724 is 427433025.

It is a junction number, because it is equal to n+sod(n) for n = 520334691 and 520334700.

It is not an unprimeable number, because it can be changed into a prime (520334723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26392 + ... + 41679.

Almost surely, 2^520334724 is an apocalyptic number.

It is an amenable number.

520334724 is an abundant number, since it is smaller than the sum of its proper divisors (1000666044).

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

520334724 is a wasteful number, since it uses less digits than its factorization.

520334724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68105 (or 68096 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 520334724 is about 22810.8466304958. The cubic root of 520334724 is about 804.3176574538.

Adding to 520334724 its reverse (427433025), we get a palindrome (947767749).

The spelling of 520334724 in words is "five hundred twenty million, three hundred thirty-four thousand, seven hundred twenty-four".