2191046 has 32 divisors (see below), whose sum is σ = 3967488. Its totient is φ = 894240.

The previous prime is 2191031. The next prime is 2191051. The reversal of 2191046 is 6401912.

It is a happy number.

2191046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13361 + ... + 13523.

It is an arithmetic number, because the mean of its divisors is an integer number (123984).

2^2191046 is an apocalyptic number.

2191046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2191046 is a deficient number, since it is larger than the sum of its proper divisors (1776442).

2191046 is a wasteful number, since it uses less digits than its factorization.

2191046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2191046 is about 1480.2182271544. The cubic root of 2191046 is about 129.8824578565.

Adding to 2191046 its reverse (6401912), we get a palindrome (8592958).

The spelling of 2191046 in words is "two million, one hundred ninety-one thousand, forty-six".