520520227028 has 72 divisors (see below), whose sum is σ = 995500611000. Its totient is φ = 237922099200.

The previous prime is 520520227021. The next prime is 520520227039. The reversal of 520520227028 is 820722025025.

It can be written as a sum of positive squares in 12 ways, for example, as 23060852164 + 497459374864 = 151858^2 + 705308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520520227021) 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 23 ways as a sum of consecutive naturals, for example, 25695848 + ... + 25716096.

It is an arithmetic number, because the mean of its divisors is an integer number (13826397375).

Almost surely, 2^520520227028 is an apocalyptic number.

It is an amenable number.

520520227028 is a deficient number, since it is larger than the sum of its proper divisors (474980383972).

520520227028 is a wasteful number, since it uses less digits than its factorization.

520520227028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20925 (or 20906 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 520520227028 in words is "five hundred twenty billion, five hundred twenty million, two hundred twenty-seven thousand, twenty-eight".