11117844 has 48 divisors (see below), whose sum is σ = 29111040. Its totient is φ = 3669120.

The previous prime is 11117833. The next prime is 11117857. The reversal of 11117844 is 44871111.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11749 + ... + 12659.

It is an arithmetic number, because the mean of its divisors is an integer number (606480).

Almost surely, 2^11117844 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 11117844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14555520).

11117844 is an abundant number, since it is smaller than the sum of its proper divisors (17993196).

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

11117844 is a wasteful number, since it uses less digits than its factorization.

11117844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1029 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 11117844 is about 3334.3431137182. The cubic root of 11117844 is about 223.1893797699.

Adding to 11117844 its reverse (44871111), we get a palindrome (55988955).

It can be divided in two parts, 111 and 17844, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 11117844 in words is "eleven million, one hundred seventeen thousand, eight hundred forty-four".