11491056 has 60 divisors (see below), whose sum is σ = 32401200. Its totient is φ = 3801600.

The previous prime is 11491043. The next prime is 11491061. The reversal of 11491056 is 65019411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28456 + ... + 28856.

It is an arithmetic number, because the mean of its divisors is an integer number (540020).

Almost surely, 2^11491056 is an apocalyptic number.

11491056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11491056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16200600).

11491056 is an abundant number, since it is smaller than the sum of its proper divisors (20910144).

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

11491056 is a wasteful number, since it uses less digits than its factorization.

11491056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 11491056 is about 3389.8460142018. The cubic root of 11491056 is about 225.6593400565.

The spelling of 11491056 in words is "eleven million, four hundred ninety-one thousand, fifty-six".