309084976272 has 80 divisors (see below), whose sum is σ = 817408317440. Its totient is φ = 100586779776.

The previous prime is 309084976271. The next prime is 309084976351. The reversal of 309084976272 is 272679480903.

It is not an unprimeable number, because it can be changed into a prime (309084976271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4687629 + ... + 4753107.

It is an arithmetic number, because the mean of its divisors is an integer number (10217603968).

Almost surely, 2^309084976272 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 309084976272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408704158720).

309084976272 is an abundant number, since it is smaller than the sum of its proper divisors (508323341168).

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

309084976272 is a wasteful number, since it uses less digits than its factorization.

309084976272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67820 (or 67814 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 309084976272 in words is "three hundred nine billion, eighty-four million, nine hundred seventy-six thousand, two hundred seventy-two".