2159822 has 12 divisors (see below), whose sum is σ = 3768840. Its totient is φ = 925596.

The previous prime is 2159821. The next prime is 2159831. The reversal of 2159822 is 2289512.

2159822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10922 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (314070).

2^2159822 is an apocalyptic number.

2159822 is a deficient number, since it is larger than the sum of its proper divisors (1609018).

2159822 is a wasteful number, since it uses less digits than its factorization.

2159822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22055 (or 22048 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2159822 is about 1469.6332875925. The cubic root of 2159822 is about 129.2625304768.

The spelling of 2159822 in words is "two million, one hundred fifty-nine thousand, eight hundred twenty-two".