520403324232 has 128 divisors (see below), whose sum is σ = 1427119119360. Its totient is φ = 156829259520.

The previous prime is 520403324219. The next prime is 520403324321. The reversal of 520403324232 is 232423304025.

It is a happy number.

It is a super-2 number, since 2×520403324232² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520403324232.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42555703 + ... + 42567929.

It is an arithmetic number, because the mean of its divisors is an integer number (11149368120).

Almost surely, 2^520403324232 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 520403324232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713559559680).

520403324232 is an abundant number, since it is smaller than the sum of its proper divisors (906715795128).

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

520403324232 is a wasteful number, since it uses less digits than its factorization.

520403324232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13123 (or 13119 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 520403324232 its reverse (232423304025), we get a palindrome (752826628257).

The spelling of 520403324232 in words is "five hundred twenty billion, four hundred three million, three hundred twenty-four thousand, two hundred thirty-two".