520464 has 40 divisors (see below), whose sum is σ = 1537600. Its totient is φ = 148608.

The previous prime is 520451. The next prime is 520529. The reversal of 520464 is 464025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 520464.

It is an unprimeable number.

520464 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439 + ... + 1110.

It is an arithmetic number, because the mean of its divisors is an integer number (38440).

2⁵²⁰⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

520464 is an abundant number, since it is smaller than the sum of its proper divisors (1017136).

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

520464 is a wasteful number, since it uses less digits than its factorization.

520464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 520464 is about 721.4319094689. The cubic root of 520464 is about 80.4384262247.

Adding to 520464 its reverse (464025), we get a palindrome (984489).

The spelling of 520464 in words is "five hundred twenty thousand, four hundred sixty-four".