2448721728 has 42 divisors (see below), whose sum is σ = 7018820354. Its totient is φ = 816240384.

The previous prime is 2448721721. The next prime is 2448721757. The reversal of 2448721728 is 8271278442.

It can be written as a sum of positive squares in only one way, i.e., 2345658624 + 103063104 = 48432^2 + 10152^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2448721721) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2125051 + ... + 2126202.

Almost surely, 2^2448721728 is an apocalyptic number.

It is an amenable number.

2448721728 is an abundant number, since it is smaller than the sum of its proper divisors (4570098626).

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

2448721728 is a wasteful number, since it uses less digits than its factorization.

2448721728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251271 (or 4251258 counting only the distinct ones).

The product of its digits is 401408, while the sum is 45.

The square root of 2448721728 is about 49484.5605012311. The cubic root of 2448721728 is about 1347.8652549292.

The spelling of 2448721728 in words is "two billion, four hundred forty-eight million, seven hundred twenty-one thousand, seven hundred twenty-eight".