6720828 has 24 divisors (see below), whose sum is σ = 16106832. Its totient is φ = 2179584.

The previous prime is 6720823. The next prime is 6720841. The reversal of 6720828 is 8280276.

6720828 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720821) 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, 7125 + ... + 8012.

It is an arithmetic number, because the mean of its divisors is an integer number (671118).

Almost surely, 2^6720828 is an apocalyptic number.

It is an amenable number.

6720828 is an abundant number, since it is smaller than the sum of its proper divisors (9386004).

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

6720828 is a wasteful number, since it uses less digits than its factorization.

6720828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15181 (or 15179 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 6720828 is about 2592.4559784112. The cubic root of 6720828 is about 188.7155093916.

The spelling of 6720828 in words is "six million, seven hundred twenty thousand, eight hundred twenty-eight".