2800105 has 24 divisors (see below), whose sum is σ = 4268160. Its totient is φ = 1743840.

The previous prime is 2800103. The next prime is 2800139. The reversal of 2800105 is 5010082.

It is a happy number.

It is not a de Polignac number, because 2800105 - 2¹ = 2800103 is a prime.

It is a super-2 number, since 2×2800105² = 15681176022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2800103) 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 23 ways as a sum of consecutive naturals, for example, 2176 + ... + 3214.

It is an arithmetic number, because the mean of its divisors is an integer number (177840).

2^2800105 is an apocalyptic number.

It is an amenable number.

2800105 is a deficient number, since it is larger than the sum of its proper divisors (1468055).

2800105 is a wasteful number, since it uses less digits than its factorization.

2800105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2800105 is about 1673.3514275250. The cubic root of 2800105 is about 140.9477364440.

Adding to 2800105 its reverse (5010082), we get a palindrome (7810187).

The spelling of 2800105 in words is "two million, eight hundred thousand, one hundred five".