68248728 has 48 divisors (see below), whose sum is σ = 192881520. Its totient is φ = 21759936.

The previous prime is 68248717. The next prime is 68248753. The reversal of 68248728 is 82784286.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18951 + ... + 22262.

It is an arithmetic number, because the mean of its divisors is an integer number (4018365).

Almost surely, 2^68248728 is an apocalyptic number.

It is an amenable number.

68248728 is an abundant number, since it is smaller than the sum of its proper divisors (124632792).

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

68248728 is a wasteful number, since it uses less digits than its factorization.

68248728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41248 (or 41241 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 68248728 is about 8261.2788356283. The cubic root of 68248728 is about 408.6625624492.

The spelling of 68248728 in words is "sixty-eight million, two hundred forty-eight thousand, seven hundred twenty-eight".