2724865 has 32 divisors (see below), whose sum is σ = 3983616. Its totient is φ = 1762560.

The previous prime is 2724859. The next prime is 2724877. The reversal of 2724865 is 5684272.

It is not a de Polignac number, because 2724865 - 2¹⁷ = 2593793 is a prime.

It is an Ulam number.

2724865 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2724865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26404 + ... + 26506.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

2^2724865 is an apocalyptic number.

It is an amenable number.

2724865 is a deficient number, since it is larger than the sum of its proper divisors (1258751).

2724865 is a wasteful number, since it uses less digits than its factorization.

2724865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

The product of its digits is 26880, while the sum is 34.

The square root of 2724865 is about 1650.7165110945. The cubic root of 2724865 is about 139.6738154461.

The spelling of 2724865 in words is "two million, seven hundred twenty-four thousand, eight hundred sixty-five".