68796728 has 128 divisors (see below), whose sum is σ = 177085440. Its totient is φ = 24393600.

The previous prime is 68796713. The next prime is 68796743. The reversal of 68796728 is 82769786.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68796713) and next prime (68796743).

It is a self number, because there is not a number n which added to its sum of digits gives 68796728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 968933 + ... + 969003.

It is an arithmetic number, because the mean of its divisors is an integer number (1383480).

Almost surely, 2^68796728 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 68796728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88542720).

68796728 is an abundant number, since it is smaller than the sum of its proper divisors (108288712).

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

68796728 is a wasteful number, since it uses less digits than its factorization.

68796728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 104 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The square root of 68796728 is about 8294.3793016717. The cubic root of 68796728 is about 409.7534269941.

The spelling of 68796728 in words is "sixty-eight million, seven hundred ninety-six thousand, seven hundred twenty-eight".