520134720 has 448 divisors, whose sum is σ = 2080442880. Its totient is φ = 107347968.

The previous prime is 520134683. The next prime is 520134721. The reversal of 520134720 is 27431025.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (520134721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3312882 + ... + 3313038.

Almost surely, 2^520134720 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 520134720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040221440).

520134720 is an abundant number, since it is smaller than the sum of its proper divisors (1560308160).

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

520134720 is a wasteful number, since it uses less digits than its factorization.

520134720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 520134720 is about 22806.4622420927. The cubic root of 520134720 is about 804.2145908720.

Adding to 520134720 its reverse (27431025), we get a palindrome (547565745).

The spelling of 520134720 in words is "five hundred twenty million, one hundred thirty-four thousand, seven hundred twenty".