4256823 has 16 divisors (see below), whose sum is σ = 5937120. Its totient is φ = 2709504.

The previous prime is 4256807. The next prime is 4256831. The reversal of 4256823 is 3286524.

It is not a de Polignac number, because 4256823 - 2⁴ = 4256807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256803) 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 15 ways as a sum of consecutive naturals, for example, 9615 + ... + 10047.

It is an arithmetic number, because the mean of its divisors is an integer number (371070).

Almost surely, 2^4256823 is an apocalyptic number.

4256823 is a deficient number, since it is larger than the sum of its proper divisors (1680297).

4256823 is a wasteful number, since it uses less digits than its factorization.

4256823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

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

The square root of 4256823 is about 2063.2069697439. The cubic root of 4256823 is about 162.0672255668.

Subtracting from 4256823 its reverse (3286524), we obtain a cube (970299 = 99³).

It can be divided in two parts, 42 and 56823, that added together give a palindrome (56865).

The spelling of 4256823 in words is "four million, two hundred fifty-six thousand, eight hundred twenty-three".