561360928 has 48 divisors (see below), whose sum is σ = 1183140000. Its totient is φ = 261384192.

The previous prime is 561360923. The next prime is 561360937. The reversal of 561360928 is 829063165.

It is not an unprimeable number, because it can be changed into a prime (561360923) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28048 + ... + 43696.

It is an arithmetic number, because the mean of its divisors is an integer number (24648750).

Almost surely, 2^561360928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561360928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591570000).

561360928 is an abundant number, since it is smaller than the sum of its proper divisors (621779072).

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

561360928 is a wasteful number, since it uses less digits than its factorization.

561360928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15737 (or 15729 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 561360928 is about 23693.0565356182. The cubic root of 561360928 is about 824.9242308131.

The spelling of 561360928 in words is "five hundred sixty-one million, three hundred sixty thousand, nine hundred twenty-eight".