2188822 has 4 divisors (see below), whose sum is σ = 3283236. Its totient is φ = 1094410.

The previous prime is 2188811. The next prime is 2188831. The reversal of 2188822 is 2288812.

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, 547204 + ... + 547207.

It is an arithmetic number, because the mean of its divisors is an integer number (820809).

2^2188822 is an apocalyptic number.

2188822 is a deficient number, since it is larger than the sum of its proper divisors (1094414).

2188822 is a wasteful number, since it uses less digits than its factorization.

2188822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094413.

The product of its digits is 4096, while the sum is 31.

The square root of 2188822 is about 1479.4667958423. The cubic root of 2188822 is about 129.8384976695.

The spelling of 2188822 in words is "two million, one hundred eighty-eight thousand, eight hundred twenty-two".