2891206 has 8 divisors (see below), whose sum is σ = 4347000. Its totient is φ = 1442208.

The previous prime is 2891201. The next prime is 2891219. The reversal of 2891206 is 6021982.

It is a happy number.

2891206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891201) 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 3 ways as a sum of consecutive naturals, for example, 451 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (543375).

2^2891206 is an apocalyptic number.

2891206 is a deficient number, since it is larger than the sum of its proper divisors (1455794).

2891206 is a wasteful number, since it uses less digits than its factorization.

2891206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2891206 is about 1700.3546688853. The cubic root of 2891206 is about 142.4600236688.

The spelling of 2891206 in words is "two million, eight hundred ninety-one thousand, two hundred six".