5561728 has 16 divisors (see below), whose sum is σ = 11080260. Its totient is φ = 2780800.

The previous prime is 5561719. The next prime is 5561779. The reversal of 5561728 is 8271655.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 5561693 and 5561702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21598 + ... + 21853.

Almost surely, 2^5561728 is an apocalyptic number.

It is an amenable number.

5561728 is a deficient number, since it is larger than the sum of its proper divisors (5518532).

5561728 is an equidigital number, since it uses as much as digits as its factorization.

5561728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43465 (or 43453 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 5561728 is about 2358.3316136625. The cubic root of 5561728 is about 177.1753292635.

The spelling of 5561728 in words is "five million, five hundred sixty-one thousand, seven hundred twenty-eight".