520242804 has 48 divisors (see below), whose sum is σ = 1350115200. Its totient is φ = 173242368.

The previous prime is 520242799. The next prime is 520242839. The reversal of 520242804 is 408242025.

It is a happy number.

It is a super-2 number, since 2×520242804² = 541305150227564832, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154612 + ... + 157940.

It is an arithmetic number, because the mean of its divisors is an integer number (28127400).

Almost surely, 2^520242804 is an apocalyptic number.

520242804 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

520242804 is an abundant number, since it is smaller than the sum of its proper divisors (829872396).

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

520242804 is a wasteful number, since it uses less digits than its factorization.

520242804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789 (or 4781 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 520242804 is about 22808.8317105458. The cubic root of 520242804 is about 804.2702922806.

Adding to 520242804 its reverse (408242025), we get a palindrome (928484829).

The spelling of 520242804 in words is "five hundred twenty million, two hundred forty-two thousand, eight hundred four".