2840105 has 8 divisors (see below), whose sum is σ = 3608712. Its totient is φ = 2138368.

The previous prime is 2840093. The next prime is 2840113. The reversal of 2840105 is 5010482.

2840105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1373584 + 1466521 = 1172^2 + 1211^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2840105 - 2⁶ = 2840041 is a prime.

It is a super-2 number, since 2×2840105² = 16132392822050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16622 + ... + 16791.

It is an arithmetic number, because the mean of its divisors is an integer number (451089).

2^2840105 is an apocalyptic number.

It is an amenable number.

2840105 is a deficient number, since it is larger than the sum of its proper divisors (768607).

2840105 is a wasteful number, since it uses less digits than its factorization.

2840105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33435.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2840105 is about 1685.2611073659. The cubic root of 2840105 is about 141.6157202428.

Adding to 2840105 its reverse (5010482), we get a palindrome (7850587).

The spelling of 2840105 in words is "two million, eight hundred forty thousand, one hundred five".