561730208 has 24 divisors (see below), whose sum is σ = 1190976948. Its totient is φ = 259259904.

The previous prime is 561730187. The next prime is 561730241. The reversal of 561730208 is 802037165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 555639184 + 6091024 = 23572^2 + 2468^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

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, 674741 + ... + 675572.

Almost surely, 2^561730208 is an apocalyptic number.

It is an amenable number.

561730208 is an abundant number, since it is smaller than the sum of its proper divisors (629246740).

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

561730208 is a wasteful number, since it uses less digits than its factorization.

561730208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350336 (or 1350328 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 561730208 is about 23700.8482548621. The cubic root of 561730208 is about 825.1050777700.

The spelling of 561730208 in words is "five hundred sixty-one million, seven hundred thirty thousand, two hundred eight".