6628028 has 24 divisors (see below), whose sum is σ = 13399344. Its totient is φ = 2835200.

The previous prime is 6628007. The next prime is 6628033. The reversal of 6628028 is 8208266.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6627985 and 6628003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3683 + ... + 5178.

It is an arithmetic number, because the mean of its divisors is an integer number (558306).

Almost surely, 2^6628028 is an apocalyptic number.

6628028 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6628028 is an abundant number, since it is smaller than the sum of its proper divisors (6771316).

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

6628028 is a wasteful number, since it uses less digits than its factorization.

6628028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893 (or 8891 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 6628028 is about 2574.4956787690. The cubic root of 6628028 is about 187.8428972729.

The spelling of 6628028 in words is "six million, six hundred twenty-eight thousand, twenty-eight".