520530430 has 48 divisors (see below), whose sum is σ = 1119423456. Its totient is φ = 173638080.

The previous prime is 520530407. The next prime is 520530431. The reversal of 520530430 is 34035025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520530431) 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, 3775 + ... + 32485.

It is an arithmetic number, because the mean of its divisors is an integer number (23321322).

Almost surely, 2^520530430 is an apocalyptic number.

520530430 is an abundant number, since it is smaller than the sum of its proper divisors (598893026).

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

520530430 is a wasteful number, since it uses less digits than its factorization.

520530430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28769 (or 28762 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 520530430 is about 22815.1359846923. The cubic root of 520530430 is about 804.4184836167.

Adding to 520530430 its reverse (34035025), we get a palindrome (554565455).

The spelling of 520530430 in words is "five hundred twenty million, five hundred thirty thousand, four hundred thirty".