11280823 has 4 divisors (see below), whose sum is σ = 11362120. Its totient is φ = 11199528.

The previous prime is 11280817. The next prime is 11280881. The reversal of 11280823 is 32808211.

11280823 is digitally balanced in base 2, 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11280823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11280883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40440 + ... + 40717.

It is an arithmetic number, because the mean of its divisors is an integer number (2840530).

Almost surely, 2^11280823 is an apocalyptic number.

11280823 is a deficient number, since it is larger than the sum of its proper divisors (81297).

11280823 is an equidigital number, since it uses as much as digits as its factorization.

11280823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81296.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 11280823 is about 3358.6936448566. The cubic root of 11280823 is about 224.2746882602.

The spelling of 11280823 in words is "eleven million, two hundred eighty thousand, eight hundred twenty-three".