5643456 has 224 divisors, whose sum is σ = 20482560. Its totient is φ = 1327104.

The previous prime is 5643427. The next prime is 5643479. The reversal of 5643456 is 6543465.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297015 + ... + 297033.

It is an arithmetic number, because the mean of its divisors is an integer number (91440).

Almost surely, 2^5643456 is an apocalyptic number.

5643456 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5643456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10241280).

5643456 is an abundant number, since it is smaller than the sum of its proper divisors (14839104).

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

5643456 is a wasteful number, since it uses less digits than its factorization.

5643456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 61 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 5643456 is about 2375.5959252364. The cubic root of 5643456 is about 178.0389596159.

Subtracting 5643456 from its reverse (6543465), we obtain a palindrome (900009).

The spelling of 5643456 in words is "five million, six hundred forty-three thousand, four hundred fifty-six".