1105398 has 48 divisors (see below), whose sum is σ = 2835456. Its totient is φ = 304560.

The previous prime is 1105397. The next prime is 1105427. The reversal of 1105398 is 8935011.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3765 + ... + 4047.

It is an arithmetic number, because the mean of its divisors is an integer number (59072).

2^1105398 is an apocalyptic number.

1105398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1105398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417728).

1105398 is an abundant number, since it is smaller than the sum of its proper divisors (1730058).

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

1105398 is a wasteful number, since it uses less digits than its factorization.

1105398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1105398 is about 1051.3790943328. The cubic root of 1105398 is about 103.3965920906.

The spelling of 1105398 in words is "one million, one hundred five thousand, three hundred ninety-eight".