520016620 has 24 divisors (see below), whose sum is σ = 1098075888. Its totient is φ = 206856000.

The previous prime is 520016617. The next prime is 520016641. The reversal of 520016620 is 26610025.

It is a junction number, because it is equal to n+sod(n) for n = 520016591 and 520016600.

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, 68206 + ... + 75445.

It is an arithmetic number, because the mean of its divisors is an integer number (45753162).

Almost surely, 2^520016620 is an apocalyptic number.

It is an amenable number.

520016620 is an abundant number, since it is smaller than the sum of its proper divisors (578059268).

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

520016620 is a wasteful number, since it uses less digits than its factorization.

520016620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143841 (or 143839 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 520016620 is about 22803.8729166780. The cubic root of 520016620 is about 804.1537188653.

Adding to 520016620 its reverse (26610025), we get a palindrome (546626645).

The spelling of 520016620 in words is "five hundred twenty million, sixteen thousand, six hundred twenty".