520169040 has 100 divisors (see below), whose sum is σ = 1806646644. Its totient is φ = 138710016.

The previous prime is 520169033. The next prime is 520169071. The reversal of 520169040 is 40961025.

520169040 is a `hidden beast` number, since 520 + 16 + 90 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 167029776 + 353139264 = 12924^2 + 18792^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 520168995 and 520169013.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 33657 + ... + 46616.

Almost surely, 2^520169040 is an apocalyptic number.

It is an amenable number.

520169040 is an abundant number, since it is smaller than the sum of its proper divisors (1286477604).

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

520169040 is a wasteful number, since it uses less digits than its factorization.

520169040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80298 (or 80283 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 520169040 is about 22807.2146480012. The cubic root of 520169040 is about 804.2322786214.

The spelling of 520169040 in words is "five hundred twenty million, one hundred sixty-nine thousand, forty".