2129273344 has 80 divisors (see below), whose sum is σ = 4705636320. Its totient is φ = 954408960.

The previous prime is 2129273309. The next prime is 2129273387. The reversal of 2129273344 is 4433729212.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 408547 + ... + 413725.

It is an arithmetic number, because the mean of its divisors is an integer number (58820454).

Almost surely, 2^2129273344 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 2129273344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2352818160).

2129273344 is an abundant number, since it is smaller than the sum of its proper divisors (2576362976).

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

2129273344 is an equidigital number, since it uses as much as digits as its factorization.

2129273344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5281 (or 5265 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 2129273344 is about 46144.0499306249. The cubic root of 2129273344 is about 1286.5020199115.

The spelling of 2129273344 in words is "two billion, one hundred twenty-nine million, two hundred seventy-three thousand, three hundred forty-four".