11128091 has 8 divisors (see below), whose sum is σ = 12615120. Its totient is φ = 9731232.

The previous prime is 11128069. The next prime is 11128093. The reversal of 11128091 is 19082111.

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 11128091 - 2⁶ = 11128027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11128093) 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 7 ways as a sum of consecutive naturals, for example, 22280 + ... + 22773.

It is an arithmetic number, because the mean of its divisors is an integer number (1576890).

Almost surely, 2^11128091 is an apocalyptic number.

11128091 is a deficient number, since it is larger than the sum of its proper divisors (1487029).

11128091 is a wasteful number, since it uses less digits than its factorization.

11128091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45085.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 11128091 is about 3335.8793443409. The cubic root of 11128091 is about 223.2579278117.

The spelling of 11128091 in words is "eleven million, one hundred twenty-eight thousand, ninety-one".