2480721 has 4 divisors (see below), whose sum is σ = 3307632. Its totient is φ = 1653812.

The previous prime is 2480719. The next prime is 2480729. The reversal of 2480721 is 1270842.

2480721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2480721 - 2¹ = 2480719 is a prime.

It is a D-number.

It is a Curzon number.

2480721 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2480691 and 2480700.

It is not an unprimeable number, because it can be changed into a prime (2480729) 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 3 ways as a sum of consecutive naturals, for example, 413451 + ... + 413456.

It is an arithmetic number, because the mean of its divisors is an integer number (826908).

2^2480721 is an apocalyptic number.

It is an amenable number.

2480721 is a deficient number, since it is larger than the sum of its proper divisors (826911).

2480721 is an equidigital number, since it uses as much as digits as its factorization.

2480721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826910.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2480721 is about 1575.0304758956. The cubic root of 2480721 is about 135.3711051247.

The spelling of 2480721 in words is "two million, four hundred eighty thousand, seven hundred twenty-one".