2720873 has 4 divisors (see below), whose sum is σ = 2725248. Its totient is φ = 2716500.

The previous prime is 2720849. The next prime is 2720881. The reversal of 2720873 is 3780272.

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 a de Polignac number, because none of the positive numbers 2^k-2720873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2720843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061 + ... + 2562.

It is an arithmetic number, because the mean of its divisors is an integer number (681312).

2^2720873 is an apocalyptic number.

It is an amenable number.

2720873 is a deficient number, since it is larger than the sum of its proper divisors (4375).

2720873 is an equidigital number, since it uses as much as digits as its factorization.

2720873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 2720873 is about 1649.5068960147. The cubic root of 2720873 is about 139.6055734865.

The spelling of 2720873 in words is "two million, seven hundred twenty thousand, eight hundred seventy-three".