1123188 has 48 divisors (see below), whose sum is σ = 2924544. Its totient is φ = 332640.

The previous prime is 1123181. The next prime is 1123189. The reversal of 1123188 is 8813211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8781 + ... + 8907.

It is an arithmetic number, because the mean of its divisors is an integer number (60928).

2^1123188 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 1123188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462272).

1123188 is an abundant number, since it is smaller than the sum of its proper divisors (1801356).

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

1123188 is a wasteful number, since it uses less digits than its factorization.

1123188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 210 counting only the distinct ones).

The product of its digits is 384, while the sum is 24.

The square root of 1123188 is about 1059.8056425590. The cubic root of 1123188 is about 103.9483224519.

Adding to 1123188 its reverse (8813211), we get a palindrome (9936399).

The spelling of 1123188 in words is "one million, one hundred twenty-three thousand, one hundred eighty-eight".