2211838 has 4 divisors (see below), whose sum is σ = 3317760. Its totient is φ = 1105918.

The previous prime is 2211821. The next prime is 2211883. The reversal of 2211838 is 8381122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552958 + ... + 552961.

It is an arithmetic number, because the mean of its divisors is an integer number (829440).

2^2211838 is an apocalyptic number.

2211838 is a deficient number, since it is larger than the sum of its proper divisors (1105922).

2211838 is a wasteful number, since it uses less digits than its factorization.

2211838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105921.

The product of its digits is 768, while the sum is 25.

The square root of 2211838 is about 1487.2249325506. The cubic root of 2211838 is about 130.2920063255.

The spelling of 2211838 in words is "two million, two hundred eleven thousand, eight hundred thirty-eight".