68928304 has 20 divisors (see below), whose sum is σ = 133685640. Its totient is φ = 34428800.

The previous prime is 68928287. The next prime is 68928337. The reversal of 68928304 is 40382986.

It is a super-2 number, since 2×68928304² = 9502222184632832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21732 + ... + 24700.

It is an arithmetic number, because the mean of its divisors is an integer number (6684282).

Almost surely, 2^68928304 is an apocalyptic number.

It is an amenable number.

68928304 is a deficient number, since it is larger than the sum of its proper divisors (64757336).

68928304 is a wasteful number, since it uses less digits than its factorization.

68928304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428 (or 4422 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 68928304 is about 8302.3071492206. The cubic root of 68928304 is about 410.0144829308.

The spelling of 68928304 in words is "sixty-eight million, nine hundred twenty-eight thousand, three hundred four".