11491872 has 96 divisors (see below), whose sum is σ = 35280000. Its totient is φ = 3273984.

The previous prime is 11491853. The next prime is 11491873. The reversal of 11491872 is 27819411.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11491873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32754 + ... + 33102.

It is an arithmetic number, because the mean of its divisors is an integer number (367500).

Almost surely, 2^11491872 is an apocalyptic number.

11491872 is a gapful number since it is divisible by the number (12) 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 11491872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17640000).

11491872 is an abundant number, since it is smaller than the sum of its proper divisors (23788128).

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

11491872 is an equidigital number, since it uses as much as digits as its factorization.

11491872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 361 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 11491872 is about 3389.9663715146. The cubic root of 11491872 is about 225.6646814183.

The spelling of 11491872 in words is "eleven million, four hundred ninety-one thousand, eight hundred seventy-two".