308985408 has 112 divisors (see below), whose sum is σ = 914765760. Its totient is φ = 102269952.

The previous prime is 308985403. The next prime is 308985431. The reversal of 308985408 is 804589803.

It is not an unprimeable number, because it can be changed into a prime (308985403) 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 15 ways as a sum of consecutive naturals, for example, 281116 + ... + 282212.

Almost surely, 2^308985408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308985408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457382880).

308985408 is an abundant number, since it is smaller than the sum of its proper divisors (605780352).

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

308985408 is a wasteful number, since it uses less digits than its factorization.

308985408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 308985408 is about 17577.9807714083. The cubic root of 308985408 is about 676.0507880566.

The spelling of 308985408 in words is "three hundred eight million, nine hundred eighty-five thousand, four hundred eight".