520347748 has 12 divisors (see below), whose sum is σ = 911431612. Its totient is φ = 259938720.

The previous prime is 520347721. The next prime is 520347749. The reversal of 520347748 is 847743025.

It can be written as a sum of positive squares in 2 ways, for example, as 26708224 + 493639524 = 5168^2 + 22218^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520347748.

It is not an unprimeable number, because it can be changed into a prime (520347749) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 53763 + ... + 62698.

Almost surely, 2^520347748 is an apocalyptic number.

It is an amenable number.

520347748 is a deficient number, since it is larger than the sum of its proper divisors (391083864).

520347748 is a wasteful number, since it uses less digits than its factorization.

520347748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117582 (or 117580 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 520347748 is about 22811.1321069341. The cubic root of 520347748 is about 804.3243680994.

The spelling of 520347748 in words is "five hundred twenty million, three hundred forty-seven thousand, seven hundred forty-eight".