2223845 has 8 divisors (see below), whose sum is σ = 2873976. Its totient is φ = 1642176.

The previous prime is 2223841. The next prime is 2223853. The reversal of 2223845 is 5483222.

It can be written as a sum of positive squares in 4 ways, for example, as 247009 + 1976836 = 497^2 + 1406^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2223845 - 2² = 2223841 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223841) 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, 17042 + ... + 17171.

It is an arithmetic number, because the mean of its divisors is an integer number (359247).

2^2223845 is an apocalyptic number.

It is an amenable number.

2223845 is a deficient number, since it is larger than the sum of its proper divisors (650131).

2223845 is a wasteful number, since it uses less digits than its factorization.

2223845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34231.

The product of its digits is 3840, while the sum is 26.

The square root of 2223845 is about 1491.2561818816. The cubic root of 2223845 is about 130.5273451111.

The spelling of 2223845 in words is "two million, two hundred twenty-three thousand, eight hundred forty-five".