308668395 has 144 divisors (see below), whose sum is σ = 652043520. Its totient is φ = 123742080.

The previous prime is 308668391. The next prime is 308668403. The reversal of 308668395 is 593866803.

It is not a de Polignac number, because 308668395 - 2² = 308668391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308668391) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9957030 + ... + 9957060.

It is an arithmetic number, because the mean of its divisors is an integer number (4528080).

Almost surely, 2^308668395 is an apocalyptic number.

308668395 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

308668395 is an abundant number, since it is smaller than the sum of its proper divisors (343375125).

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

308668395 is a wasteful number, since it uses less digits than its factorization.

308668395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 308668395 is about 17568.9611246653. The cubic root of 308668395 is about 675.8195039681.

The spelling of 308668395 in words is "three hundred eight million, six hundred sixty-eight thousand, three hundred ninety-five".