2444721 has 8 divisors (see below), whose sum is σ = 3266880. Its totient is φ = 1626192.

The previous prime is 2444699. The next prime is 2444723. The reversal of 2444721 is 1274442.

2444721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2444721 - 2⁶ = 2444657 is a prime.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 2444691 and 2444700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444723) 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 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 2978.

It is an arithmetic number, because the mean of its divisors is an integer number (408360).

2^2444721 is an apocalyptic number.

It is an amenable number.

2444721 is a deficient number, since it is larger than the sum of its proper divisors (822159).

2444721 is an equidigital number, since it uses as much as digits as its factorization.

2444721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815.

The product of its digits is 1792, while the sum is 24.

The square root of 2444721 is about 1563.5603602036. The cubic root of 2444721 is about 134.7130806203.

The spelling of 2444721 in words is "two million, four hundred forty-four thousand, seven hundred twenty-one".