308065680 has 480 divisors, whose sum is σ = 1228421376. Its totient is φ = 71165952.

The previous prime is 308065679. The next prime is 308065699. The reversal of 308065680 is 86560803.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 95 ways as a sum of consecutive naturals, for example, 5812534 + ... + 5812586.

Almost surely, 2^308065680 is an apocalyptic number.

308065680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308065680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614210688).

308065680 is an abundant number, since it is smaller than the sum of its proper divisors (920355696).

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

308065680 is a wasteful number, since it uses less digits than its factorization.

308065680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 308065680 is about 17551.7999077018. The cubic root of 308065680 is about 675.3793423295.

The spelling of 308065680 in words is "three hundred eight million, sixty-five thousand, six hundred eighty".