2091340 has 24 divisors (see below), whose sum is σ = 4650912. Its totient is φ = 787200.

The previous prime is 2091337. The next prime is 2091343. The reversal of 2091340 is 431902.

It is an interprime number because it is at equal distance from previous prime (2091337) and next prime (2091343).

It is not an unprimeable number, because it can be changed into a prime (2091343) 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 7 ways as a sum of consecutive naturals, for example, 2736 + ... + 3415.

It is an arithmetic number, because the mean of its divisors is an integer number (193788).

2^2091340 is an apocalyptic number.

2091340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2091340 is an abundant number, since it is smaller than the sum of its proper divisors (2559572).

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

2091340 is a wasteful number, since it uses less digits than its factorization.

2091340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6177 (or 6175 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2091340 is about 1446.1466039099. The cubic root of 2091340 is about 127.8816451545.

The spelling of 2091340 in words is "two million, ninety-one thousand, three hundred forty".