11091472 has 40 divisors (see below), whose sum is σ = 24748416. Its totient is φ = 4717056.

The previous prime is 11091467. The next prime is 11091473. The reversal of 11091472 is 27419011.

It is a super-2 number, since 2×11091472² = 246041502253568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11091473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18408 + ... + 19000.

Almost surely, 2^11091472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11091472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12374208).

11091472 is an abundant number, since it is smaller than the sum of its proper divisors (13656944).

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

11091472 is a wasteful number, since it uses less digits than its factorization.

11091472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 11091472 is about 3330.3861637954. The cubic root of 11091472 is about 223.0127684780.

The spelling of 11091472 in words is "eleven million, ninety-one thousand, four hundred seventy-two".