2448721 has 16 divisors (see below), whose sum is σ = 2838528. Its totient is φ = 2091600.

The previous prime is 2448713. The next prime is 2448727. The reversal of 2448721 is 1278442.

2448721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2448721 - 2³ = 2448713 is a prime.

2448721 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2448721.

It is not an unprimeable number, because it can be changed into a prime (2448727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14580 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (177408).

2^2448721 is an apocalyptic number.

It is an amenable number.

2448721 is a deficient number, since it is larger than the sum of its proper divisors (389807).

2448721 is a wasteful number, since it uses less digits than its factorization.

2448721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252.

The product of its digits is 3584, while the sum is 28.

The square root of 2448721 is about 1564.8389693512. The cubic root of 2448721 is about 134.7865121357.

The spelling of 2448721 in words is "two million, four hundred forty-eight thousand, seven hundred twenty-one".