2857263 has 8 divisors (see below), whose sum is σ = 3822000. Its totient is φ = 1898688.

The previous prime is 2857259. The next prime is 2857297. The reversal of 2857263 is 3627582.

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

It is not a de Polignac number, because 2857263 - 2² = 2857259 is a prime.

It is a d-powerful number, because it can be written as 2² + 8² + 5⁸ + 7⁷ + 2¹¹ + 6⁶ + 3¹³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857223) 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 7 ways as a sum of consecutive naturals, for example, 318 + ... + 2411.

It is an arithmetic number, because the mean of its divisors is an integer number (477750).

2^2857263 is an apocalyptic number.

2857263 is a deficient number, since it is larger than the sum of its proper divisors (964737).

2857263 is a wasteful number, since it uses less digits than its factorization.

2857263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081.

The product of its digits is 20160, while the sum is 33.

The square root of 2857263 is about 1690.3440478199. The cubic root of 2857263 is about 141.9003301109.

It can be divided in two parts, 28 and 57263, that added together give a triangular number (57291 = T₃₃₈).

The spelling of 2857263 in words is "two million, eight hundred fifty-seven thousand, two hundred sixty-three".