68947028 has 12 divisors (see below), whose sum is σ = 121117920. Its totient is φ = 34341912.

The previous prime is 68947009. The next prime is 68947033. The reversal of 68947028 is 82074986.

It is a self number, because there is not a number n which added to its sum of digits gives 68947028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31718 + ... + 33821.

It is an arithmetic number, because the mean of its divisors is an integer number (10093160).

Almost surely, 2^68947028 is an apocalyptic number.

It is an amenable number.

68947028 is a deficient number, since it is larger than the sum of its proper divisors (52170892).

68947028 is a wasteful number, since it uses less digits than its factorization.

68947028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65806 (or 65804 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 68947028 is about 8303.4347110097. The cubic root of 68947028 is about 410.0516056399.

The spelling of 68947028 in words is "sixty-eight million, nine hundred forty-seven thousand, twenty-eight".