68390304 has 48 divisors (see below), whose sum is σ = 179968320. Its totient is φ = 22740480.

The previous prime is 68390297. The next prime is 68390321. The reversal of 68390304 is 40309386.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60012 + ... + 61140.

It is an arithmetic number, because the mean of its divisors is an integer number (3749340).

Almost surely, 2^68390304 is an apocalyptic number.

It is an amenable number.

68390304 is an abundant number, since it is smaller than the sum of its proper divisors (111578016).

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

68390304 is a wasteful number, since it uses less digits than its factorization.

68390304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773 (or 1765 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 68390304 is about 8269.8430456690. The cubic root of 68390304 is about 408.9449454932.

The spelling of 68390304 in words is "sixty-eight million, three hundred ninety thousand, three hundred four".