2278223 has 4 divisors (see below), whose sum is σ = 2281248. Its totient is φ = 2275200.

The previous prime is 2278217. The next prime is 2278229. The reversal of 2278223 is 3228722.

2278223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (2278217) and next prime (2278229).

It is a cyclic number.

It is not a de Polignac number, because 2278223 - 2⁴ = 2278207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2278192 and 2278201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278229) 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 3 ways as a sum of consecutive naturals, for example, 623 + ... + 2223.

It is an arithmetic number, because the mean of its divisors is an integer number (570312).

2^2278223 is an apocalyptic number.

2278223 is a deficient number, since it is larger than the sum of its proper divisors (3025).

2278223 is a wasteful number, since it uses less digits than its factorization.

2278223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024.

The product of its digits is 2688, while the sum is 26.

The square root of 2278223 is about 1509.3783488576. The cubic root of 2278223 is about 131.5826849661.

The spelling of 2278223 in words is "two million, two hundred seventy-eight thousand, two hundred twenty-three".