520297920 has 168 divisors, whose sum is σ = 1895057424. Its totient is φ = 130572288.

The previous prime is 520297909. The next prime is 520297933. The reversal of 520297920 is 29792025.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 43647 + ... + 54273.

Almost surely, 2^520297920 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 520297920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947528712).

520297920 is an abundant number, since it is smaller than the sum of its proper divisors (1374759504).

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

520297920 is a wasteful number, since it uses less digits than its factorization.

520297920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10667 (or 10654 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 520297920 is about 22810.0398947481. The cubic root of 520297920 is about 804.2986935039.

The spelling of 520297920 in words is "five hundred twenty million, two hundred ninety-seven thousand, nine hundred twenty".