520213424 has 10 divisors (see below), whose sum is σ = 1007913540. Its totient is φ = 260106704.

The previous prime is 520213423. The next prime is 520213427. The reversal of 520213424 is 424312025.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 520213424.

It is not an unprimeable number, because it can be changed into a prime (520213423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16256654 + ... + 16256685.

It is an arithmetic number, because the mean of its divisors is an integer number (100791354).

Almost surely, 2^520213424 is an apocalyptic number.

It is an amenable number.

520213424 is a deficient number, since it is larger than the sum of its proper divisors (487700116).

520213424 is a wasteful number, since it uses less digits than its factorization.

520213424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32513347 (or 32513341 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 520213424 is about 22808.1876526830. The cubic root of 520213424 is about 804.2551519744.

Adding to 520213424 its reverse (424312025), we get a palindrome (944525449).

The spelling of 520213424 in words is "five hundred twenty million, two hundred thirteen thousand, four hundred twenty-four".