2091236 has 12 divisors (see below), whose sum is σ = 4182528. Its totient is φ = 896232.

The previous prime is 2091227. The next prime is 2091239. The reversal of 2091236 is 6321902.

2091236 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2091239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37316 + ... + 37371.

It is an arithmetic number, because the mean of its divisors is an integer number (348544).

2^2091236 is an apocalyptic number.

It is an amenable number.

2091236 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2091236 is a wasteful number, since it uses less digits than its factorization.

2091236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74698 (or 74696 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2091236 is about 1446.1106458359. The cubic root of 2091236 is about 127.8795253157.

The spelling of 2091236 in words is "two million, ninety-one thousand, two hundred thirty-six".