11285891 has 8 divisors (see below), whose sum is σ = 11731968. Its totient is φ = 10845000.

The previous prime is 11285881. The next prime is 11285899. The reversal of 11285891 is 19858211.

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 11285891 - 2¹⁴ = 11269507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11285899) 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, 3476 + ... + 5886.

It is an arithmetic number, because the mean of its divisors is an integer number (1466496).

Almost surely, 2^11285891 is an apocalyptic number.

11285891 is a deficient number, since it is larger than the sum of its proper divisors (446077).

11285891 is a wasteful number, since it uses less digits than its factorization.

11285891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its digits is 5760, while the sum is 35.

The square root of 11285891 is about 3359.4480201366. The cubic root of 11285891 is about 224.3082689646.

The spelling of 11285891 in words is "eleven million, two hundred eighty-five thousand, eight hundred ninety-one".