2856343 has 4 divisors (see below), whose sum is σ = 3264400. Its totient is φ = 2448288.

The previous prime is 2856283. The next prime is 2856349. The reversal of 2856343 is 3436582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3436582 = 2 ⋅1718291.

It is a cyclic number.

It is not a de Polignac number, because 2856343 - 2¹⁷ = 2725271 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 8 + 5⁹ + 6⁷ + 3¹⁰ + 4² + 3¹² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204018 + ... + 204031.

It is an arithmetic number, because the mean of its divisors is an integer number (816100).

2^2856343 is an apocalyptic number.

2856343 is a deficient number, since it is larger than the sum of its proper divisors (408057).

2856343 is an equidigital number, since it uses as much as digits as its factorization.

2856343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408056.

The product of its digits is 17280, while the sum is 31.

The square root of 2856343 is about 1690.0718919620. The cubic root of 2856343 is about 141.8850984810.

The spelling of 2856343 in words is "two million, eight hundred fifty-six thousand, three hundred forty-three".