308972384 has 48 divisors (see below), whose sum is σ = 697421088. Its totient is φ = 131991552.

The previous prime is 308972371. The next prime is 308972387. The reversal of 308972384 is 483279803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308972387) 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, 73442 + ... + 77534.

It is an arithmetic number, because the mean of its divisors is an integer number (14529606).

Almost surely, 2^308972384 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 308972384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348710544).

308972384 is an abundant number, since it is smaller than the sum of its proper divisors (388448704).

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

308972384 is a wasteful number, since it uses less digits than its factorization.

308972384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447 (or 4439 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 308972384 is about 17577.6103040203. The cubic root of 308972384 is about 676.0412892162.

The spelling of 308972384 in words is "three hundred eight million, nine hundred seventy-two thousand, three hundred eighty-four".