6443244 has 36 divisors (see below), whose sum is σ = 16478280. Its totient is φ = 2122560.

The previous prime is 6443231. The next prime is 6443287. The reversal of 6443244 is 4423446.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2199 + ... + 4209.

It is an arithmetic number, because the mean of its divisors is an integer number (457730).

Almost surely, 2^6443244 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 6443244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8239140).

6443244 is an abundant number, since it is smaller than the sum of its proper divisors (10035036).

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

6443244 is a wasteful number, since it uses less digits than its factorization.

6443244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110 (or 2105 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 6443244 is about 2538.3545851594. The cubic root of 6443244 is about 186.0807835008.

The spelling of 6443244 in words is "six million, four hundred forty-three thousand, two hundred forty-four".