2724305 has 4 divisors (see below), whose sum is σ = 3269172. Its totient is φ = 2179440.

The previous prime is 2724299. The next prime is 2724329. The reversal of 2724305 is 5034272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450241 + 2274064 = 671^2 + 1508^2 .

It is not a de Polignac number, because 2724305 - 2¹⁴ = 2707921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272426 + ... + 272435.

It is an arithmetic number, because the mean of its divisors is an integer number (817293).

2^2724305 is an apocalyptic number.

It is an amenable number.

2724305 is a deficient number, since it is larger than the sum of its proper divisors (544867).

2724305 is an equidigital number, since it uses as much as digits as its factorization.

2724305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544866.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 2724305 is about 1650.5468790677. The cubic root of 2724305 is about 139.6642464466.

Adding to 2724305 its reverse (5034272), we get a palindrome (7758577).

The spelling of 2724305 in words is "two million, seven hundred twenty-four thousand, three hundred five".