11280811 has 8 divisors (see below), whose sum is σ = 11438064. Its totient is φ = 11124960.

The previous prime is 11280767. The next prime is 11280817. The reversal of 11280811 is 11808211.

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 11280811 - 2¹⁵ = 11248043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11280817) by changing a digit.

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, 33916 + ... + 34246.

It is an arithmetic number, because the mean of its divisors is an integer number (1429758).

Almost surely, 2^11280811 is an apocalyptic number.

11280811 is a deficient number, since it is larger than the sum of its proper divisors (157253).

11280811 is a wasteful number, since it uses less digits than its factorization.

11280811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 128, while the sum is 22.

The square root of 11280811 is about 3358.6918584473. The cubic root of 11280811 is about 224.2746087359.

The spelling of 11280811 in words is "eleven million, two hundred eighty thousand, eight hundred eleven".