520822944 has 144 divisors (see below), whose sum is σ = 1525797000. Its totient is φ = 168450048.

The previous prime is 520822943. The next prime is 520822949. The reversal of 520822944 is 449228025.

It can be written as a sum of positive squares in 4 ways, for example, as 492307344 + 28515600 = 22188^2 + 5340^2 .

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

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

It is a junction number, because it is equal to n+sod(n) for n = 520822899 and 520822908.

It is not an unprimeable number, because it can be changed into a prime (520822943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2274222 + ... + 2274450.

Almost surely, 2^520822944 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 520822944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762898500).

520822944 is an abundant number, since it is smaller than the sum of its proper divisors (1004974056).

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

520822944 is a wasteful number, since it uses less digits than its factorization.

520822944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 520822944 is about 22821.5456093578. The cubic root of 520822944 is about 804.5691373806.

The spelling of 520822944 in words is "five hundred twenty million, eight hundred twenty-two thousand, nine hundred forty-four".