520230720 has 112 divisors (see below), whose sum is σ = 1671888960. Its totient is φ = 137035776.

The previous prime is 520230611. The next prime is 520230757. The reversal of 520230720 is 27032025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76416 + ... + 82944.

It is an arithmetic number, because the mean of its divisors is an integer number (14927580).

Almost surely, 2^520230720 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 520230720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835944480).

520230720 is an abundant number, since it is smaller than the sum of its proper divisors (1151658240).

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

520230720 is a wasteful number, since it uses less digits than its factorization.

520230720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632 (or 6622 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 520230720 is about 22808.5668116171. The cubic root of 520230720 is about 804.2640651386.

Adding to 520230720 its reverse (27032025), we get a palindrome (547262745).

The spelling of 520230720 in words is "five hundred twenty million, two hundred thirty thousand, seven hundred twenty".