6900728 has 16 divisors (see below), whose sum is σ = 13214880. Its totient is φ = 3376768.

The previous prime is 6900727. The next prime is 6900731. The reversal of 6900728 is 8270096.

It is a junction number, because it is equal to n+sod(n) for n = 6900694 and 6900703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6900727) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8801 + ... + 9552.

It is an arithmetic number, because the mean of its divisors is an integer number (825930).

Almost surely, 2^6900728 is an apocalyptic number.

It is an amenable number.

6900728 is a deficient number, since it is larger than the sum of its proper divisors (6314152).

6900728 is a wasteful number, since it uses less digits than its factorization.

6900728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18406 (or 18402 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 6900728 is about 2626.9236760896. The cubic root of 6900728 is about 190.3845213743.

The spelling of 6900728 in words is "six million, nine hundred thousand, seven hundred twenty-eight".