520464420 has 192 divisors, whose sum is σ = 1864450560. Its totient is φ = 118070784.

The previous prime is 520464341. The next prime is 520464433. The reversal of 520464420 is 24464025.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 593022 + ... + 593898.

It is an arithmetic number, because the mean of its divisors is an integer number (9710680).

Almost surely, 2^520464420 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 520464420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932225280).

520464420 is an abundant number, since it is smaller than the sum of its proper divisors (1343986140).

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

520464420 is a wasteful number, since it uses less digits than its factorization.

520464420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 520464420 is about 22813.6893114639. The cubic root of 520464420 is about 804.3844786186.

The spelling of 520464420 in words is "five hundred twenty million, four hundred sixty-four thousand, four hundred twenty".