309202048872 has 128 divisors (see below), whose sum is σ = 910839081600. Its totient is φ = 96852962304.

The previous prime is 309202048849. The next prime is 309202048877. The reversal of 309202048872 is 278840202903.

It is not an unprimeable number, because it can be changed into a prime (309202048877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2295618 + ... + 2426574.

It is an arithmetic number, because the mean of its divisors is an integer number (7115930325).

Almost surely, 2^309202048872 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 309202048872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455419540800).

309202048872 is an abundant number, since it is smaller than the sum of its proper divisors (601637032728).

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

309202048872 is a wasteful number, since it uses less digits than its factorization.

309202048872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131632 (or 131622 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 309202048872 in words is "three hundred nine billion, two hundred two million, forty-eight thousand, eight hundred seventy-two".