561728334 has 16 divisors (see below), whose sum is σ = 1126068480. Its totient is φ = 186807480.

The previous prime is 561728327. The next prime is 561728383. The reversal of 561728334 is 433827165.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 561728292 and 561728301.

It is a congruent number.

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, 106024 + ... + 111195.

It is an arithmetic number, because the mean of its divisors is an integer number (70379280).

Almost surely, 2^561728334 is an apocalyptic number.

561728334 is an abundant number, since it is smaller than the sum of its proper divisors (564340146).

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

561728334 is a wasteful number, since it uses less digits than its factorization.

561728334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217655.

The product of its digits is 120960, while the sum is 39.

The square root of 561728334 is about 23700.8087203791. The cubic root of 561728334 is about 825.1041602188.

The spelling of 561728334 in words is "five hundred sixty-one million, seven hundred twenty-eight thousand, three hundred thirty-four".