520866306 has 12 divisors (see below), whose sum is σ = 1128543702. Its totient is φ = 173622096.

The previous prime is 520866301. The next prime is 520866329. The reversal of 520866306 is 603668025.

It can be written as a sum of positive squares in only one way, i.e., 515063025 + 5803281 = 22695^2 + 2409^2 .

It is not an unprimeable number, because it can be changed into a prime (520866301) 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 5 ways as a sum of consecutive naturals, for example, 14468491 + ... + 14468526.

Almost surely, 2^520866306 is an apocalyptic number.

520866306 is an abundant number, since it is smaller than the sum of its proper divisors (607677396).

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

520866306 is a wasteful number, since it uses less digits than its factorization.

520866306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28937025 (or 28937022 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 520866306 is about 22822.4956128816. The cubic root of 520866306 is about 804.5914653516.

The spelling of 520866306 in words is "five hundred twenty million, eight hundred sixty-six thousand, three hundred six".