2211738 has 16 divisors (see below), whose sum is σ = 4496736. Its totient is φ = 725040.

The previous prime is 2211707. The next prime is 2211779. The reversal of 2211738 is 8371122.

It is an unprimeable number.

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, 2656 + ... + 3387.

It is an arithmetic number, because the mean of its divisors is an integer number (281046).

2^2211738 is an apocalyptic number.

2211738 is an abundant number, since it is smaller than the sum of its proper divisors (2284998).

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

2211738 is a wasteful number, since it uses less digits than its factorization.

2211738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109.

The product of its digits is 672, while the sum is 24.

The square root of 2211738 is about 1487.1913125082. The cubic root of 2211738 is about 130.2900427403.

It can be divided in two parts, 22117 and 38, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 2211738 in words is "two million, two hundred eleven thousand, seven hundred thirty-eight".