520638130 has 8 divisors (see below), whose sum is σ = 937148652. Its totient is φ = 208255248.

The previous prime is 520638119. The next prime is 520638161. The reversal of 520638130 is 31836025.

It can be written as a sum of positive squares in 2 ways, for example, as 510353281 + 10284849 = 22591^2 + 3207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26031897 + ... + 26031916.

Almost surely, 2^520638130 is an apocalyptic number.

520638130 is a deficient number, since it is larger than the sum of its proper divisors (416510522).

520638130 is a wasteful number, since it uses less digits than its factorization.

520638130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52063820.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 520638130 is about 22817.4961378325. The cubic root of 520638130 is about 804.4739590134.

The spelling of 520638130 in words is "five hundred twenty million, six hundred thirty-eight thousand, one hundred thirty".