308972664 has 256 divisors, whose sum is σ = 1153152000. Its totient is φ = 74027520.

The previous prime is 308972659. The next prime is 308972687. The reversal of 308972664 is 466279803.

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 63 ways as a sum of consecutive naturals, for example, 215502 + ... + 216930.

It is an arithmetic number, because the mean of its divisors is an integer number (4504500).

Almost surely, 2^308972664 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 308972664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576576000).

308972664 is an abundant number, since it is smaller than the sum of its proper divisors (844179336).

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

308972664 is a wasteful number, since it uses less digits than its factorization.

308972664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 308972664 is about 17577.6182686961. The cubic root of 308972664 is about 676.0414934324.

The spelling of 308972664 in words is "three hundred eight million, nine hundred seventy-two thousand, six hundred sixty-four".