561834028 has 48 divisors (see below), whose sum is σ = 1185166080. Its totient is φ = 227658816.

The previous prime is 561833989. The next prime is 561834043. The reversal of 561834028 is 820438165.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439326 + ... + 440602.

It is an arithmetic number, because the mean of its divisors is an integer number (24690960).

Almost surely, 2^561834028 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 561834028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592583040).

561834028 is an abundant number, since it is smaller than the sum of its proper divisors (623332052).

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

561834028 is a wasteful number, since it uses less digits than its factorization.

561834028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 2132 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 561834028 is about 23703.0383706393. The cubic root of 561834028 is about 825.1559071130.

The spelling of 561834028 in words is "five hundred sixty-one million, eight hundred thirty-four thousand, twenty-eight".