520728383 has 8 divisors (see below), whose sum is σ = 626440320. Its totient is φ = 422847000.

The previous prime is 520728371. The next prime is 520728401. The reversal of 520728383 is 383827025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520728383 - 2⁶ = 520728319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520728083) 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 7 ways as a sum of consecutive naturals, for example, 1957493 + ... + 1957758.

It is an arithmetic number, because the mean of its divisors is an integer number (78305040).

Almost surely, 2^520728383 is an apocalyptic number.

520728383 is a deficient number, since it is larger than the sum of its proper divisors (105711937).

520728383 is a wasteful number, since it uses less digits than its factorization.

520728383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915277.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 520728383 is about 22819.4737669386. The cubic root of 520728383 is about 804.5204417103.

The spelling of 520728383 in words is "five hundred twenty million, seven hundred twenty-eight thousand, three hundred eighty-three".