520512030 has 48 divisors (see below), whose sum is σ = 1424563920. Its totient is φ = 131497344.

The previous prime is 520512029. The next prime is 520512037. The reversal of 520512030 is 30215025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 520511994 and 520512012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520512037) 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, 150487 + ... + 153906.

It is an arithmetic number, because the mean of its divisors is an integer number (29678415).

Almost surely, 2^520512030 is an apocalyptic number.

520512030 is an abundant number, since it is smaller than the sum of its proper divisors (904051890).

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

520512030 is a wasteful number, since it uses less digits than its factorization.

520512030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304425 (or 304422 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 520512030 is about 22814.7327400520. The cubic root of 520512030 is about 804.4090051606.

Adding to 520512030 its reverse (30215025), we get a palindrome (550727055).

The spelling of 520512030 in words is "five hundred twenty million, five hundred twelve thousand, thirty".