2129272448 has 64 divisors (see below), whose sum is σ = 4497400320. Its totient is φ = 1002378240.

The previous prime is 2129272441. The next prime is 2129272469. The reversal of 2129272448 is 8442729212.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2129272441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139565 + ... + 154067.

It is an arithmetic number, because the mean of its divisors is an integer number (70271880).

Almost surely, 2^2129272448 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 2129272448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2248700160).

2129272448 is an abundant number, since it is smaller than the sum of its proper divisors (2368127872).

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

2129272448 is a wasteful number, since it uses less digits than its factorization.

2129272448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14585 (or 14573 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 2129272448 is about 46144.0402218965. The cubic root of 2129272448 is about 1286.5018394578.

The spelling of 2129272448 in words is "two billion, one hundred twenty-nine million, two hundred seventy-two thousand, four hundred forty-eight".