2091308 has 6 divisors (see below), whose sum is σ = 3659796. Its totient is φ = 1045652.

The previous prime is 2091301. The next prime is 2091317. The reversal of 2091308 is 8031902.

It is not an unprimeable number, because it can be changed into a prime (2091301) 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 as a sum of consecutive naturals, namely, 261410 + ... + 261417.

It is an arithmetic number, because the mean of its divisors is an integer number (609966).

2^2091308 is an apocalyptic number.

It is an amenable number.

2091308 is a deficient number, since it is larger than the sum of its proper divisors (1568488).

2091308 is a wasteful number, since it uses less digits than its factorization.

2091308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522831 (or 522829 counting only the distinct ones).

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

The square root of 2091308 is about 1446.1355399823. The cubic root of 2091308 is about 127.8809929039.

It can be divided in two parts, 209 and 1308, that multiplied together give a palindrome (273372).

The spelling of 2091308 in words is "two million, ninety-one thousand, three hundred eight".