309468772 has 12 divisors (see below), whose sum is σ = 565117056. Its totient is φ = 148006760.

The previous prime is 309468769. The next prime is 309468787. The reversal of 309468772 is 277864903.

309468772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (46).

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 3 ways as a sum of consecutive naturals, for example, 1681804 + ... + 1681987.

It is an arithmetic number, because the mean of its divisors is an integer number (47093088).

Almost surely, 2^309468772 is an apocalyptic number.

It is an amenable number.

309468772 is a deficient number, since it is larger than the sum of its proper divisors (255648284).

309468772 is a wasteful number, since it uses less digits than its factorization.

309468772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363818 (or 3363816 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 309468772 is about 17591.7245317223. The cubic root of 309468772 is about 676.4031330249.

The spelling of 309468772 in words is "three hundred nine million, four hundred sixty-eight thousand, seven hundred seventy-two".