561728908 has 24 divisors (see below), whose sum is σ = 1104673248. Its totient is φ = 247986816.

The previous prime is 561728891. The next prime is 561728953. The reversal of 561728908 is 809827165.

561728908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233641 + ... + 236032.

It is an arithmetic number, because the mean of its divisors is an integer number (46028052).

Almost surely, 2^561728908 is an apocalyptic number.

It is an amenable number.

561728908 is a deficient number, since it is larger than the sum of its proper divisors (542944340).

561728908 is a wasteful number, since it uses less digits than its factorization.

561728908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469713 (or 469711 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 561728908 is about 23700.8208296675. The cubic root of 561728908 is about 825.1044412619.

The spelling of 561728908 in words is "five hundred sixty-one million, seven hundred twenty-eight thousand, nine hundred eight".