520023456 has 96 divisors (see below), whose sum is σ = 1557823680. Its totient is φ = 168645888.

The previous prime is 520023451. The next prime is 520023473. The reversal of 520023456 is 654320025.

520023456 is a `hidden beast` number, since 5 + 200 + 2 + 3 + 456 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is not an unprimeable number, because it can be changed into a prime (520023451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23835 + ... + 40101.

It is an arithmetic number, because the mean of its divisors is an integer number (16227330).

Almost surely, 2^520023456 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 520023456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778911840).

520023456 is an abundant number, since it is smaller than the sum of its proper divisors (1037800224).

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

520023456 is a wasteful number, since it uses less digits than its factorization.

520023456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16323 (or 16309 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 520023456 is about 22804.0228030056. The cubic root of 520023456 is about 804.1572425800.

The spelling of 520023456 in words is "five hundred twenty million, twenty-three thousand, four hundred fifty-six".