2875729 has 4 divisors (see below), whose sum is σ = 2880676. Its totient is φ = 2870784.

The previous prime is 2875709. The next prime is 2875739. The reversal of 2875729 is 9275782.

2875729 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.

It can be written as a sum of positive squares in 2 ways, for example, as 859329 + 2016400 = 927^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2875729 - 2¹⁹ = 2351441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2875691 and 2875700.

It is not an unprimeable number, because it can be changed into a prime (2875709) 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, 1464 + ... + 2809.

It is an arithmetic number, because the mean of its divisors is an integer number (720169).

2^2875729 is an apocalyptic number.

It is an amenable number.

2875729 is a deficient number, since it is larger than the sum of its proper divisors (4947).

2875729 is an equidigital number, since it uses as much as digits as its factorization.

2875729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946.

The product of its digits is 70560, while the sum is 40.

The square root of 2875729 is about 1695.7974525279. The cubic root of 2875729 is about 142.2053664061.

It can be divided in two parts, 28 and 75729, that added together give a palindrome (75757).

The spelling of 2875729 in words is "two million, eight hundred seventy-five thousand, seven hundred twenty-nine".