6306728 has 32 divisors (see below), whose sum is σ = 12700800. Its totient is φ = 2925312.

The previous prime is 6306721. The next prime is 6306731. The reversal of 6306728 is 8276036.

It is a junction number, because it is equal to n+sod(n) for n = 6306694 and 6306703.

It is not an unprimeable number, because it can be changed into a prime (6306721) 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, 10451 + ... + 11037.

It is an arithmetic number, because the mean of its divisors is an integer number (396900).

Almost surely, 2^6306728 is an apocalyptic number.

6306728 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6306728 is an abundant number, since it is smaller than the sum of its proper divisors (6394072).

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

6306728 is a wasteful number, since it uses less digits than its factorization.

6306728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 6306728 is about 2511.3199716484. The cubic root of 6306728 is about 184.7571979107.

The spelling of 6306728 in words is "six million, three hundred six thousand, seven hundred twenty-eight".