2203856 has 20 divisors (see below), whose sum is σ = 4299204. Its totient is φ = 1094400.

The previous prime is 2203853. The next prime is 2203889. The reversal of 2203856 is 6583022.

It can be written as a sum of positive squares in 2 ways, for example, as 13456 + 2190400 = 116^2 + 1480^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2516 + ... + 3276.

2^2203856 is an apocalyptic number.

It is an amenable number.

2203856 is a deficient number, since it is larger than the sum of its proper divisors (2095348).

2203856 is a wasteful number, since it uses less digits than its factorization.

2203856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2203856 is about 1484.5389856787. The cubic root of 2203856 is about 130.1350864040.

Adding to 2203856 its reverse (6583022), we get a palindrome (8786878).

The spelling of 2203856 in words is "two million, two hundred three thousand, eight hundred fifty-six".