6428944 has 10 divisors (see below), whose sum is σ = 12456110. Its totient is φ = 3214464.

The previous prime is 6428921. The next prime is 6428957. The reversal of 6428944 is 4498246.

It can be written as a sum of positive squares in only one way, i.e., 5017600 + 1411344 = 2240^2 + 1188^2 .

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 as a sum of consecutive naturals, namely, 200889 + ... + 200920.

It is an arithmetic number, because the mean of its divisors is an integer number (1245611).

Almost surely, 2^6428944 is an apocalyptic number.

It is an amenable number.

6428944 is a deficient number, since it is larger than the sum of its proper divisors (6027166).

6428944 is a wasteful number, since it uses less digits than its factorization.

6428944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401817 (or 401811 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 6428944 is about 2535.5362351976. The cubic root of 6428944 is about 185.9430202772.

The spelling of 6428944 in words is "six million, four hundred twenty-eight thousand, nine hundred forty-four".