308019968 has 72 divisors (see below), whose sum is σ = 652444800. Its totient is φ = 144875520.

The previous prime is 308019967. The next prime is 308019983. The reversal of 308019968 is 869910803.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (308019967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293108 + ... + 294156.

Almost surely, 2^308019968 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 308019968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326222400).

308019968 is an abundant number, since it is smaller than the sum of its proper divisors (344424832).

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

308019968 is a wasteful number, since it uses less digits than its factorization.

308019968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 308019968 is about 17550.4976567618. The cubic root of 308019968 is about 675.3459355274.

The spelling of 308019968 in words is "three hundred eight million, nineteen thousand, nine hundred sixty-eight".