6444055428 has 48 divisors (see below), whose sum is σ = 16758544320. Its totient is φ = 1915259904.

The previous prime is 6444055393. The next prime is 6444055441. The reversal of 6444055428 is 8245504446.

It is a self number, because there is not a number n which added to its sum of digits gives 6444055428.

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, 827401 + ... + 835152.

It is an arithmetic number, because the mean of its divisors is an integer number (349136340).

Almost surely, 2^6444055428 is an apocalyptic number.

6444055428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6444055428 is an abundant number, since it is smaller than the sum of its proper divisors (10314488892).

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

6444055428 is a wasteful number, since it uses less digits than its factorization.

6444055428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662596 (or 1662594 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 42.

The square root of 6444055428 is about 80274.8742010849. The cubic root of 6444055428 is about 1860.8859451545.

The spelling of 6444055428 in words is "six billion, four hundred forty-four million, fifty-five thousand, four hundred twenty-eight".