308685768 has 32 divisors (see below), whose sum is σ = 773086560. Its totient is φ = 102712320.

The previous prime is 308685763. The next prime is 308685787. The reversal of 308685768 is 867586803.

It is a self number, because there is not a number n which added to its sum of digits gives 308685768.

It is not an unprimeable number, because it can be changed into a prime (308685763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2703 + ... + 24993.

It is an arithmetic number, because the mean of its divisors is an integer number (24158955).

Almost surely, 2^308685768 is an apocalyptic number.

It is an amenable number.

308685768 is an abundant number, since it is smaller than the sum of its proper divisors (464400792).

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

308685768 is a wasteful number, since it uses less digits than its factorization.

308685768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22877 (or 22873 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 308685768 is about 17569.4555407958. The cubic root of 308685768 is about 675.8321829382.

The spelling of 308685768 in words is "three hundred eight million, six hundred eighty-five thousand, seven hundred sixty-eight".