68365728 has 96 divisors (see below), whose sum is σ = 202547520. Its totient is φ = 22429440.

The previous prime is 68365723. The next prime is 68365747. The reversal of 68365728 is 82756386.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (68365723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57298 + ... + 58478.

It is an arithmetic number, because the mean of its divisors is an integer number (2109870).

Almost surely, 2^68365728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68365728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101273760).

68365728 is an abundant number, since it is smaller than the sum of its proper divisors (134181792).

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

68365728 is a wasteful number, since it uses less digits than its factorization.

68365728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1253 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 68365728 is about 8268.3570314785. The cubic root of 68365728 is about 408.8959549469.

The spelling of 68365728 in words is "sixty-eight million, three hundred sixty-five thousand, seven hundred twenty-eight".