12288811 has 4 divisors (see below), whose sum is σ = 12309472. Its totient is φ = 12268152.

The previous prime is 12288799. The next prime is 12288817. The reversal of 12288811 is 11888221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12288811 - 2⁹ = 12288299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12288817) 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 3 ways as a sum of consecutive naturals, for example, 9411 + ... + 10636.

It is an arithmetic number, because the mean of its divisors is an integer number (3077368).

Almost surely, 2^12288811 is an apocalyptic number.

12288811 is a deficient number, since it is larger than the sum of its proper divisors (20661).

12288811 is an equidigital number, since it uses as much as digits as its factorization.

12288811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20660.

The product of its digits is 2048, while the sum is 31.

The square root of 12288811 is about 3505.5400439875. The cubic root of 12288811 is about 230.7650078059.

The spelling of 12288811 in words is "twelve million, two hundred eighty-eight thousand, eight hundred eleven".