2829865 has 4 divisors (see below), whose sum is σ = 3395844. Its totient is φ = 2263888.

The previous prime is 2829863. The next prime is 2829877. The reversal of 2829865 is 5689282.

2829865 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 an emirpimes, since its reverse is a distinct semiprime: 5689282 = 2 ⋅2844641.

It can be written as a sum of positive squares in 2 ways, for example, as 1871424 + 958441 = 1368^2 + 979^2 .

It is a cyclic number.

It is not a de Polignac number, because 2829865 - 2¹ = 2829863 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2829863) 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, 282982 + ... + 282991.

It is an arithmetic number, because the mean of its divisors is an integer number (848961).

2^2829865 is an apocalyptic number.

It is an amenable number.

2829865 is a deficient number, since it is larger than the sum of its proper divisors (565979).

2829865 is an equidigital number, since it uses as much as digits as its factorization.

2829865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565978.

The product of its digits is 69120, while the sum is 40.

The square root of 2829865 is about 1682.2202590624. The cubic root of 2829865 is about 141.4453167651.

The spelling of 2829865 in words is "two million, eight hundred twenty-nine thousand, eight hundred sixty-five".