6443028 has 18 divisors (see below), whose sum is σ = 16286634. Its totient is φ = 2147664.

The previous prime is 6443011. The next prime is 6443081. The reversal of 6443028 is 8203446.

It can be written as a sum of positive squares in only one way, i.e., 4334724 + 2108304 = 2082^2 + 1452^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 6442992 and 6443010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89451 + ... + 89522.

It is an arithmetic number, because the mean of its divisors is an integer number (904813).

Almost surely, 2^6443028 is an apocalyptic number.

It is an amenable number.

6443028 is an abundant number, since it is smaller than the sum of its proper divisors (9843606).

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

6443028 is a wasteful number, since it uses less digits than its factorization.

6443028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178983 (or 178978 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 6443028 is about 2538.3120375557. The cubic root of 6443028 is about 186.0787041187.

The spelling of 6443028 in words is "six million, four hundred forty-three thousand, twenty-eight".