2918223 has 24 divisors (see below), whose sum is σ = 5256576. Its totient is φ = 1515600.

The previous prime is 2918213. The next prime is 2918231. The reversal of 2918223 is 3228192.

It is a happy number.

It is not a de Polignac number, because 2918223 - 2⁴ = 2918207 is a prime.

2918223 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2918213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1413 + ... + 2798.

It is an arithmetic number, because the mean of its divisors is an integer number (219024).

2^2918223 is an apocalyptic number.

2918223 is a deficient number, since it is larger than the sum of its proper divisors (2338353).

2918223 is a wasteful number, since it uses less digits than its factorization.

2918223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235 (or 4232 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2918223 is about 1708.2807146368. The cubic root of 2918223 is about 142.9023899055.

The spelling of 2918223 in words is "two million, nine hundred eighteen thousand, two hundred twenty-three".