520427520 has 144 divisors (see below), whose sum is σ = 1804027680. Its totient is φ = 138756096.

The previous prime is 520427507. The next prime is 520427521. The reversal of 520427520 is 25724025.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520427521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89337 + ... + 94983.

It is an arithmetic number, because the mean of its divisors is an integer number (12527970).

Almost surely, 2^520427520 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 520427520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902013840).

520427520 is an abundant number, since it is smaller than the sum of its proper divisors (1283600160).

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

520427520 is a wasteful number, since it uses less digits than its factorization.

520427520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680 (or 5657 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 520427520 is about 22812.8805721680. The cubic root of 520427520 is about 804.3654683606.

The spelling of 520427520 in words is "five hundred twenty million, four hundred twenty-seven thousand, five hundred twenty".