6426444 has 24 divisors (see below), whose sum is σ = 15152368. Its totient is φ = 2119680.

The previous prime is 6426443. The next prime is 6426461. The reversal of 6426444 is 4446246.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597 + ... + 3924.

Almost surely, 2^6426444 is an apocalyptic number.

It is an amenable number.

6426444 is an abundant number, since it is smaller than the sum of its proper divisors (8725924).

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

6426444 is a wasteful number, since it uses less digits than its factorization.

6426444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625 (or 5623 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 6426444 is about 2535.0431948983. The cubic root of 6426444 is about 185.9189148244.

The spelling of 6426444 in words is "six million, four hundred twenty-six thousand, four hundred forty-four".