6973728 has 24 divisors (see below), whose sum is σ = 18306288. Its totient is φ = 2324544.

The previous prime is 6973727. The next prime is 6973739. The reversal of 6973728 is 8273796.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 6973728.

It is not an unprimeable number, because it can be changed into a prime (6973721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36226 + ... + 36417.

It is an arithmetic number, because the mean of its divisors is an integer number (762762).

Almost surely, 2^6973728 is an apocalyptic number.

It is an amenable number.

6973728 is an abundant number, since it is smaller than the sum of its proper divisors (11332560).

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

6973728 is a wasteful number, since it uses less digits than its factorization.

6973728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72656 (or 72648 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 6973728 is about 2640.7817024510. The cubic root of 6973728 is about 191.0535014545.

The spelling of 6973728 in words is "six million, nine hundred seventy-three thousand, seven hundred twenty-eight".