309380952 has 64 divisors (see below), whose sum is σ = 816192000. Its totient is φ = 97455744.

The previous prime is 309380927. The next prime is 309380963. The reversal of 309380952 is 259083903.

It is a self number, because there is not a number n which added to its sum of digits gives 309380952.

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 15 ways as a sum of consecutive naturals, for example, 297249 + ... + 298287.

It is an arithmetic number, because the mean of its divisors is an integer number (12753000).

Almost surely, 2^309380952 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 309380952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408096000).

309380952 is an abundant number, since it is smaller than the sum of its proper divisors (506811048).

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

309380952 is a wasteful number, since it uses less digits than its factorization.

309380952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720 (or 1716 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 309380952 is about 17589.2282946126. The cubic root of 309380952 is about 676.3391445083.

The spelling of 309380952 in words is "three hundred nine million, three hundred eighty thousand, nine hundred fifty-two".