2223738 has 36 divisors (see below), whose sum is σ = 5301114. Its totient is φ = 673200.

The previous prime is 2223731. The next prime is 2223743. The reversal of 2223738 is 8373222.

It can be written as a sum of positive squares in only one way, i.e., 1830609 + 393129 = 1353^2 + 627^2 .

It is not an unprimeable number, because it can be changed into a prime (2223731) 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 17 ways as a sum of consecutive naturals, for example, 1668 + ... + 2688.

2^2223738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2223738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2650557).

2223738 is an abundant number, since it is smaller than the sum of its proper divisors (3077376).

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

2223738 is a wasteful number, since it uses less digits than its factorization.

2223738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 1037 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 2223738 is about 1491.2203056557. The cubic root of 2223738 is about 130.5252516423.

The spelling of 2223738 in words is "two million, two hundred twenty-three thousand, seven hundred thirty-eight".