520974936 has 64 divisors (see below), whose sum is σ = 1454767200. Its totient is φ = 172744704.

The previous prime is 520974917. The next prime is 520974947. The reversal of 520974936 is 639479025.

It is a happy number.

520974936 is a `hidden beast` number, since 520 + 97 + 4 + 9 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 520974891 and 520974900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35440 + ... + 47936.

Almost surely, 2^520974936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520974936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (727383600).

520974936 is an abundant number, since it is smaller than the sum of its proper divisors (933792264).

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

520974936 is a wasteful number, since it uses less digits than its factorization.

520974936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12705 (or 12695 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 520974936 is about 22824.8753775349. The cubic root of 520974936 is about 804.6473956958.

The spelling of 520974936 in words is "five hundred twenty million, nine hundred seventy-four thousand, nine hundred thirty-six".