2191882 has 32 divisors (see below), whose sum is σ = 4207104. Its totient is φ = 831600.

The previous prime is 2191873. The next prime is 2191883. The reversal of 2191882 is 2881912.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6457 + ... + 6787.

It is an arithmetic number, because the mean of its divisors is an integer number (131472).

2^2191882 is an apocalyptic number.

2191882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2191882 is a deficient number, since it is larger than the sum of its proper divisors (2015222).

2191882 is a wasteful number, since it uses less digits than its factorization.

2191882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394.

The product of its digits is 2304, while the sum is 31.

The square root of 2191882 is about 1480.5005910164. The cubic root of 2191882 is about 129.8989747663.

The spelling of 2191882 in words is "two million, one hundred ninety-one thousand, eight hundred eighty-two".