520244000 has 96 divisors (see below), whose sum is σ = 1294465536. Its totient is φ = 205459200.

The previous prime is 520243907. The next prime is 520244009. The reversal of 520244000 is 442025.

It is a self number, because there is not a number n which added to its sum of digits gives 520244000.

It is not an unprimeable number, because it can be changed into a prime (520244009) 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 15 ways as a sum of consecutive naturals, for example, 331217 + ... + 332783.

It is an arithmetic number, because the mean of its divisors is an integer number (13484016).

Almost surely, 2^520244000 is an apocalyptic number.

520244000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520244000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647232768).

520244000 is an abundant number, since it is smaller than the sum of its proper divisors (774221536).

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

520244000 is a wasteful number, since it uses less digits than its factorization.

520244000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 520244000 is about 22808.8579284453. The cubic root of 520244000 is about 804.2709085996.

Adding to 520244000 its reverse (442025), we get a palindrome (520686025).

The spelling of 520244000 in words is "five hundred twenty million, two hundred forty-four thousand".