2091206 has 24 divisors (see below), whose sum is σ = 3557520. Its totient is φ = 919776.

The previous prime is 2091191. The next prime is 2091211. The reversal of 2091206 is 6021902.

2091206 is a Rhonda number in base 12.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7640 + ... + 7908.

It is an arithmetic number, because the mean of its divisors is an integer number (148230).

2^2091206 is an apocalyptic number.

2091206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2091206 is a deficient number, since it is larger than the sum of its proper divisors (1466314).

2091206 is a wasteful number, since it uses less digits than its factorization.

2091206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2091206 is about 1446.1002731484. The cubic root of 2091206 is about 127.8789138106.

The spelling of 2091206 in words is "two million, ninety-one thousand, two hundred six".