2448740721 has 32 divisors (see below), whose sum is σ = 3768975360. Its totient is φ = 1385246016.

The previous prime is 2448740719. The next prime is 2448740731. The reversal of 2448740721 is 1270478442.

It is a happy number.

2448740721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2448740721 - 2¹ = 2448740719 is a prime.

It is a super-2 number, since 2×2448740721² = 11992662237367199682, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2448740721.

It is not an unprimeable number, because it can be changed into a prime (2448740731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1916935 + ... + 1918211.

It is an arithmetic number, because the mean of its divisors is an integer number (117780480).

Almost surely, 2^2448740721 is an apocalyptic number.

2448740721 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2448740721 is a deficient number, since it is larger than the sum of its proper divisors (1320234639).

2448740721 is a wasteful number, since it uses less digits than its factorization.

2448740721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133.

The product of its (nonzero) digits is 100352, while the sum is 39.

The square root of 2448740721 is about 49484.7524092018. The cubic root of 2448740721 is about 1347.8687397322.

The spelling of 2448740721 in words is "two billion, four hundred forty-eight million, seven hundred forty thousand, seven hundred twenty-one".