308664768 has 56 divisors (see below), whose sum is σ = 843036160. Its totient is φ = 99567360.

The previous prime is 308664751. The next prime is 308664773. The reversal of 308664768 is 867466803.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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, 19978 + ... + 31881.

Almost surely, 2^308664768 is an apocalyptic number.

It is an amenable number.

308664768 is an abundant number, since it is smaller than the sum of its proper divisors (534371392).

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

308664768 is a wasteful number, since it uses less digits than its factorization.

308664768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51905 (or 51895 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 308664768 is about 17568.8579025502. The cubic root of 308664768 is about 675.8168568912.

The spelling of 308664768 in words is "three hundred eight million, six hundred sixty-four thousand, seven hundred sixty-eight".