1128843 has 8 divisors (see below), whose sum is σ = 1672400. Its totient is φ = 752544.

The previous prime is 1128823. The next prime is 1128889. The reversal of 1128843 is 3488211.

It is not a de Polignac number, because 1128843 - 2⁵ = 1128811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 41809 = 1128843 / (1 + 1 + 2 + 8 + 8 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20878 + ... + 20931.

It is an arithmetic number, because the mean of its divisors is an integer number (209050).

2^1128843 is an apocalyptic number.

1128843 is a deficient number, since it is larger than the sum of its proper divisors (543557).

1128843 is an equidigital number, since it uses as much as digits as its factorization.

1128843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41818 (or 41812 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1128843 is about 1062.4702348772. The cubic root of 1128843 is about 104.1224826657.

The spelling of 1128843 in words is "one million, one hundred twenty-eight thousand, eight hundred forty-three".