11491120 has 40 divisors (see below), whose sum is σ = 26873280. Its totient is φ = 4569600.

The previous prime is 11491097. The next prime is 11491153. The reversal of 11491120 is 2119411.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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, 18820 + ... + 19420.

It is an arithmetic number, because the mean of its divisors is an integer number (671832).

Almost surely, 2^11491120 is an apocalyptic number.

11491120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11491120 is an abundant number, since it is smaller than the sum of its proper divisors (15382160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11491120 is a wasteful number, since it uses less digits than its factorization.

11491120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 11491120 is about 3389.8554541455. The cubic root of 11491120 is about 225.6597589960.

It can be divided in two parts, 11491 and 120, that added together give a palindrome (11611).

The spelling of 11491120 in words is "eleven million, four hundred ninety-one thousand, one hundred twenty".