556424020 has 24 divisors (see below), whose sum is σ = 1169368200. Its totient is φ = 222402432.

The previous prime is 556424009. The next prime is 556424069. The reversal of 556424020 is 20424655.

It can be written as a sum of positive squares in 4 ways, for example, as 30276 + 556393744 = 174^2 + 23588^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 556424020.

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 7 ways as a sum of consecutive naturals, for example, 18846 + ... + 38314.

It is an arithmetic number, because the mean of its divisors is an integer number (48723675).

Almost surely, 2^556424020 is an apocalyptic number.

It is an amenable number.

556424020 is an abundant number, since it is smaller than the sum of its proper divisors (612944180).

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

556424020 is a wasteful number, since it uses less digits than its factorization.

556424020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20907 (or 20905 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 556424020 is about 23588.6417582700. The cubic root of 556424020 is about 822.4988319259.

Adding to 556424020 its reverse (20424655), we get a palindrome (576848675).

It can be divided in two parts, 5564 and 24020, that added together give a square (29584 = 172²).

The spelling of 556424020 in words is "five hundred fifty-six million, four hundred twenty-four thousand, twenty".