520868424 has 16 divisors (see below), whose sum is σ = 1302171120. Its totient is φ = 173622800.

The previous prime is 520868401. The next prime is 520868437. The reversal of 520868424 is 424868025.

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, 10851402 + ... + 10851449.

It is an arithmetic number, because the mean of its divisors is an integer number (81385695).

Almost surely, 2^520868424 is an apocalyptic number.

It is an amenable number.

520868424 is an abundant number, since it is smaller than the sum of its proper divisors (781302696).

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

520868424 is a wasteful number, since it uses less digits than its factorization.

520868424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21702860 (or 21702856 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 520868424 is about 22822.5420144207. The cubic root of 520868424 is about 804.5925559209.

The spelling of 520868424 in words is "five hundred twenty million, eight hundred sixty-eight thousand, four hundred twenty-four".