309064968 has 24 divisors (see below), whose sum is σ = 837051150. Its totient is φ = 103021632.

The previous prime is 309064933. The next prime is 309064969. The reversal of 309064968 is 869460903.

It can be written as a sum of positive squares in only one way, i.e., 307581444 + 1483524 = 17538^2 + 1218^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (309064969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2146213 + ... + 2146356.

Almost surely, 2^309064968 is an apocalyptic number.

It is an amenable number.

309064968 is an abundant number, since it is smaller than the sum of its proper divisors (527986182).

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

309064968 is a wasteful number, since it uses less digits than its factorization.

309064968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292581 (or 4292574 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 309064968 is about 17580.2436843179. The cubic root of 309064968 is about 676.1088080401.

The spelling of 309064968 in words is "three hundred nine million, sixty-four thousand, nine hundred sixty-eight".