11391872 has 32 divisors (see below), whose sum is σ = 23082600. Its totient is φ = 5598720.

The previous prime is 11391859. The next prime is 11391899. The reversal of 11391872 is 27819311.

11391872 is nontrivially palindromic in base 3.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7079 + ... + 8537.

Almost surely, 2^11391872 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 11391872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11541300).

11391872 is an abundant number, since it is smaller than the sum of its proper divisors (11690728).

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

11391872 is an equidigital number, since it uses as much as digits as its factorization.

11391872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1522 counting only the distinct ones).

The product of its digits is 3024, while the sum is 32.

The square root of 11391872 is about 3375.1847356848. The cubic root of 11391872 is about 225.0082104000.

The spelling of 11391872 in words is "eleven million, three hundred ninety-one thousand, eight hundred seventy-two".