520749412 has 12 divisors (see below), whose sum is σ = 911792700. Its totient is φ = 260237216.

The previous prime is 520749407. The next prime is 520749421. The reversal of 520749412 is 214947025.

It can be written as a sum of positive squares in 2 ways, for example, as 266538276 + 254211136 = 16326^2 + 15944^2 .

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 3 ways as a sum of consecutive naturals, for example, 25603 + ... + 41194.

It is an arithmetic number, because the mean of its divisors is an integer number (75982725).

Almost surely, 2^520749412 is an apocalyptic number.

It is an amenable number.

520749412 is a deficient number, since it is larger than the sum of its proper divisors (391043288).

520749412 is a wasteful number, since it uses less digits than its factorization.

520749412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68750 (or 68748 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 520749412 is about 22819.9345310191. The cubic root of 520749412 is about 804.5312714334.

The spelling of 520749412 in words is "five hundred twenty million, seven hundred forty-nine thousand, four hundred twelve".