520929864 has 192 divisors, whose sum is σ = 1777776000. Its totient is φ = 134193024.

The previous prime is 520929853. The next prime is 520929869. The reversal of 520929864 is 468929025.

It is not an unprimeable number, because it can be changed into a prime (520929869) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12114627 + ... + 12114669.

It is an arithmetic number, because the mean of its divisors is an integer number (9259250).

Almost surely, 2^520929864 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 520929864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888888000).

520929864 is an abundant number, since it is smaller than the sum of its proper divisors (1256846136).

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

520929864 is a wasteful number, since it uses less digits than its factorization.

520929864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 520929864 is about 22823.8880123436. Note that the first 3 decimals coincide. The cubic root of 520929864 is about 804.6241904123.

The spelling of 520929864 in words is "five hundred twenty million, nine hundred twenty-nine thousand, eight hundred sixty-four".