11286805 has 4 divisors (see below), whose sum is σ = 13544172. Its totient is φ = 9029440.

The previous prime is 11286757. The next prime is 11286811. The reversal of 11286805 is 50868211.

11286805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6115729 + 5171076 = 2473^2 + 2274^2 .

It is not a de Polignac number, because 11286805 - 2¹³ = 11278613 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1128676 + ... + 1128685.

It is an arithmetic number, because the mean of its divisors is an integer number (3386043).

Almost surely, 2^11286805 is an apocalyptic number.

It is an amenable number.

11286805 is a deficient number, since it is larger than the sum of its proper divisors (2257367).

11286805 is an equidigital number, since it uses as much as digits as its factorization.

11286805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257366.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 11286805 is about 3359.5840516350. The cubic root of 11286805 is about 224.3143240832.

The spelling of 11286805 in words is "eleven million, two hundred eighty-six thousand, eight hundred five".