2856243 has 8 divisors (see below), whose sum is σ = 4101328. Its totient is φ = 1757664.

The previous prime is 2856241. The next prime is 2856253. The reversal of 2856243 is 3426582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2856243 - 2¹ = 2856241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2856243.

It is not an unprimeable number, because it can be changed into a prime (2856241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36580 + ... + 36657.

It is an arithmetic number, because the mean of its divisors is an integer number (512666).

2^2856243 is an apocalyptic number.

2856243 is a deficient number, since it is larger than the sum of its proper divisors (1245085).

2856243 is a wasteful number, since it uses less digits than its factorization.

2856243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73253.

The product of its digits is 11520, while the sum is 30.

The square root of 2856243 is about 1690.0423071628. The cubic root of 2856243 is about 141.8834426720.

The spelling of 2856243 in words is "two million, eight hundred fifty-six thousand, two hundred forty-three".