520222340 has 24 divisors (see below), whose sum is σ = 1191782592.
Its totient is φ = 189171680.
The previous prime is 520222333. The next prime is 520222361. The reversal of 520222340 is 43222025.
Adding to 520222340 its reverse (43222025), we get a palindrome (563444365).
It is a Harshad number since it is a multiple of its sum of digits (20).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1182104 + ... + 1182543.
It is an arithmetic number, because the mean of its divisors is an integer number (49657608).
Almost surely, 2520222340 is an apocalyptic number.
It is an amenable number.
520222340 is an abundant number, since it is smaller than the sum of its proper divisors (671560252).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
520222340 is a wasteful number, since it uses less digits than its factorization.
520222340 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2364667 (or 2364665 counting only the distinct ones).
The product of its (nonzero) digits is 960, while the sum is 20.
The square root of 520222340 is about 22808.3831079715.
The cubic root of 520222340 is about 804.2597466899.
The spelling of 520222340 in words is "five hundred twenty million, two hundred twenty-two thousand, three hundred forty".