6845728 has 12 divisors (see below), whose sum is σ = 13477590. Its totient is φ = 3422848.

The previous prime is 6845723. The next prime is 6845767. The reversal of 6845728 is 8275486.

It can be written as a sum of positive squares in only one way, i.e., 5071504 + 1774224 = 2252^2 + 1332^2 .

It is not an unprimeable number, because it can be changed into a prime (6845723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106933 + ... + 106996.

Almost surely, 2^6845728 is an apocalyptic number.

It is an amenable number.

6845728 is a deficient number, since it is larger than the sum of its proper divisors (6631862).

6845728 is a wasteful number, since it uses less digits than its factorization.

6845728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213939 (or 213931 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 6845728 is about 2616.4342147281. The cubic root of 6845728 is about 189.8773723957.

It can be divided in two parts, 68 and 45728, that added together give a square (45796 = 214²).

The spelling of 6845728 in words is "six million, eight hundred forty-five thousand, seven hundred twenty-eight".