11491227 has 28 divisors (see below), whose sum is σ = 18808344. Its totient is φ = 6959520.

The previous prime is 11491223. The next prime is 11491229. The reversal of 11491227 is 72219411.

It is not a de Polignac number, because 11491227 - 2² = 11491223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 11491227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11491223) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7303 + ... + 8735.

Almost surely, 2^11491227 is an apocalyptic number.

11491227 is a deficient number, since it is larger than the sum of its proper divisors (7317117).

11491227 is an equidigital number, since it uses as much as digits as its factorization.

11491227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1447 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 11491227 is about 3389.8712364926. The cubic root of 11491227 is about 225.6604594069.

The spelling of 11491227 in words is "eleven million, four hundred ninety-one thousand, two hundred twenty-seven".