520415830 has 16 divisors (see below), whose sum is σ = 1021907664. Its totient is φ = 189242080.

The previous prime is 520415809. The next prime is 520415837. The reversal of 520415830 is 38514025.

It is a super-2 number, since 2×520415830² = 541665272229177800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520415837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365417 + ... + 2365636.

It is an arithmetic number, because the mean of its divisors is an integer number (63869229).

Almost surely, 2^520415830 is an apocalyptic number.

520415830 is a deficient number, since it is larger than the sum of its proper divisors (501491834).

520415830 is a wasteful number, since it uses less digits than its factorization.

520415830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731071.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 520415830 is about 22812.6243558254. The cubic root of 520415830 is about 804.3594456822.

Adding to 520415830 its reverse (38514025), we get a palindrome (558929855).

The spelling of 520415830 in words is "five hundred twenty million, four hundred fifteen thousand, eight hundred thirty".