520816396 has 12 divisors (see below), whose sum is σ = 911599920. Its totient is φ = 260359280.

The previous prime is 520816381. The next prime is 520816409. The reversal of 520816396 is 693618025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23001 + ... + 39631.

It is an arithmetic number, because the mean of its divisors is an integer number (75966660).

Almost surely, 2^520816396 is an apocalyptic number.

It is an amenable number.

520816396 is a deficient number, since it is larger than the sum of its proper divisors (390783524).

520816396 is a wasteful number, since it uses less digits than its factorization.

520816396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24464 (or 24462 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 520816396 is about 22821.4021479838. The cubic root of 520816396 is about 804.5657655752.

The spelling of 520816396 in words is "five hundred twenty million, eight hundred sixteen thousand, three hundred ninety-six".