1117844 has 48 divisors (see below), whose sum is σ = 2502528. Its totient is φ = 425088.

The previous prime is 1117819. The next prime is 1117861. The reversal of 1117844 is 4487111.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 13427 + ... + 13509.

It is an arithmetic number, because the mean of its divisors is an integer number (52136).

2^1117844 is an apocalyptic number.

1117844 is a gapful number since it is divisible by the number (14) 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 1117844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251264).

1117844 is an abundant number, since it is smaller than the sum of its proper divisors (1384684).

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

1117844 is a wasteful number, since it uses less digits than its factorization.

1117844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 142 counting only the distinct ones).

The product of its digits is 896, while the sum is 26.

The square root of 1117844 is about 1057.2814194906. The cubic root of 1117844 is about 103.7832022248.

The spelling of 1117844 in words is "one million, one hundred seventeen thousand, eight hundred forty-four".