520406028 has 18 divisors (see below), whose sum is σ = 1315470884. Its totient is φ = 173468664.

The previous prime is 520406011. The next prime is 520406053. The reversal of 520406028 is 820604025.

520406028 is a `hidden beast` number, since 52 + 0 + 4 + 0 + 602 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 520405992 and 520406010.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 7227826 + ... + 7227897.

Almost surely, 2^520406028 is an apocalyptic number.

It is an amenable number.

520406028 is an abundant number, since it is smaller than the sum of its proper divisors (795064856).

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

520406028 is a wasteful number, since it uses less digits than its factorization.

520406028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14455733 (or 14455728 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 520406028 is about 22812.4095176288. The cubic root of 520406028 is about 804.3543956303.

The spelling of 520406028 in words is "five hundred twenty million, four hundred six thousand, twenty-eight".