561089928 has 64 divisors (see below), whose sum is σ = 1606008960. Its totient is φ = 160022016.

The previous prime is 561089923. The next prime is 561089933. The reversal of 561089928 is 829980165.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (561089923) and next prime (561089933).

It is not an unprimeable number, because it can be changed into a prime (561089923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100950 + ... + 106362.

It is an arithmetic number, because the mean of its divisors is an integer number (25093890).

Almost surely, 2^561089928 is an apocalyptic number.

It is an amenable number.

561089928 is an abundant number, since it is smaller than the sum of its proper divisors (1044919032).

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

561089928 is a wasteful number, since it uses less digits than its factorization.

561089928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6042 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 561089928 is about 23687.3368701507. The cubic root of 561089928 is about 824.7914639133.

The spelling of 561089928 in words is "five hundred sixty-one million, eighty-nine thousand, nine hundred twenty-eight".