6728422 has 16 divisors (see below), whose sum is σ = 10360944. Its totient is φ = 3276000.

The previous prime is 6728401. The next prime is 6728437. The reversal of 6728422 is 2248276.

It is a super-2 number, since 2×6728422² = 90543325220168, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15772 + ... + 16192.

It is an arithmetic number, because the mean of its divisors is an integer number (647559).

Almost surely, 2^6728422 is an apocalyptic number.

6728422 is a deficient number, since it is larger than the sum of its proper divisors (3632522).

6728422 is a wasteful number, since it uses less digits than its factorization.

6728422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615.

The product of its digits is 10752, while the sum is 31.

The square root of 6728422 is about 2593.9201992351. The cubic root of 6728422 is about 188.7865604661.

The spelling of 6728422 in words is "six million, seven hundred twenty-eight thousand, four hundred twenty-two".