520347746 has 8 divisors (see below), whose sum is σ = 795248604. Its totient is φ = 255264880.

The previous prime is 520347721. The next prime is 520347749. The reversal of 520347746 is 647743025.

It can be written as a sum of positive squares in 2 ways, for example, as 515789521 + 4558225 = 22711^2 + 2135^2 .

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

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, 2454365 + ... + 2454576.

Almost surely, 2^520347746 is an apocalyptic number.

520347746 is a deficient number, since it is larger than the sum of its proper divisors (274900858).

520347746 is a wasteful number, since it uses less digits than its factorization.

520347746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908996.

The product of its (nonzero) digits is 141120, while the sum is 38.

The square root of 520347746 is about 22811.1320630959. The cubic root of 520347746 is about 804.3243670689.

The spelling of 520347746 in words is "five hundred twenty million, three hundred forty-seven thousand, seven hundred forty-six".