2856829 has 4 divisors (see below), whose sum is σ = 2865276. Its totient is φ = 2848384.

The previous prime is 2856823. The next prime is 2856857. The reversal of 2856829 is 9286582.

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 1205604 + 1651225 = 1098^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2856829 - 2¹¹ = 2854781 is a prime.

It is a super-2 number, since 2×2856829² = 16322943870482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2856791 and 2856800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856823) 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, 3694 + ... + 4399.

It is an arithmetic number, because the mean of its divisors is an integer number (716319).

2^2856829 is an apocalyptic number.

It is an amenable number.

2856829 is a deficient number, since it is larger than the sum of its proper divisors (8447).

2856829 is an equidigital number, since it uses as much as digits as its factorization.

2856829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8446.

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

The square root of 2856829 is about 1690.2156667124. The cubic root of 2856829 is about 141.8931451625.

The spelling of 2856829 in words is "two million, eight hundred fifty-six thousand, eight hundred twenty-nine".