6728730 has 16 divisors (see below), whose sum is σ = 16149024. Its totient is φ = 1794320.

The previous prime is 6728723. The next prime is 6728731. The reversal of 6728730 is 378276.

It is a junction number, because it is equal to n+sod(n) for n = 6728691 and 6728700.

It is not an unprimeable number, because it can be changed into a prime (6728731) by changing a digit.

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, 112116 + ... + 112175.

It is an arithmetic number, because the mean of its divisors is an integer number (1009314).

Almost surely, 2^6728730 is an apocalyptic number.

6728730 is an abundant number, since it is smaller than the sum of its proper divisors (9420294).

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

6728730 is a wasteful number, since it uses less digits than its factorization.

6728730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224301.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 6728730 is about 2593.9795681539. The cubic root of 6728730 is about 188.7894410510.

The spelling of 6728730 in words is "six million, seven hundred twenty-eight thousand, seven hundred thirty".