2223018 has 32 divisors (see below), whose sum is σ = 5646720. Its totient is φ = 635040.

The previous prime is 2223007. The next prime is 2223031. The reversal of 2223018 is 8103222.

Added to its reverse (8103222) it gives a triangular number (10326240 = T₄₅₄₄).

It is a happy number.

2223018 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 2⁸ + 2¹⁰ + 2¹⁶ + 3¹⁰ + 0 + 1 + 8⁷ .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2563 + ... + 3318.

It is an arithmetic number, because the mean of its divisors is an integer number (176460).

2^2223018 is an apocalyptic number.

2223018 is an abundant number, since it is smaller than the sum of its proper divisors (3423702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2223018 is a wasteful number, since it uses less digits than its factorization.

2223018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899 (or 5893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2223018 is about 1490.9788730898. The cubic root of 2223018 is about 130.5111630033.

Adding to 2223018 its reverse (8103222), we get a triangular number (10326240 = T₄₅₄₄).

It can be divided in two parts, 222 and 3018, that added together give a triangular number (3240 = T₈₀).

The spelling of 2223018 in words is "two million, two hundred twenty-three thousand, eighteen".