1128198 has 16 divisors (see below), whose sum is σ = 2295360. Its totient is φ = 369576.

The previous prime is 1128181. The next prime is 1128209. The reversal of 1128198 is 8918211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1240 + ... + 1947.

It is an arithmetic number, because the mean of its divisors is an integer number (143460).

2^1128198 is an apocalyptic number.

1128198 is an abundant number, since it is smaller than the sum of its proper divisors (1167162).

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

1128198 is a wasteful number, since it uses less digits than its factorization.

1128198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251.

The product of its digits is 1152, while the sum is 30.

The square root of 1128198 is about 1062.1666535907. The cubic root of 1128198 is about 104.1026476676.

It can be divided in two parts, 1128 and 198, that added together give a triangular number (1326 = T₅₁).

The spelling of 1128198 in words is "one million, one hundred twenty-eight thousand, one hundred ninety-eight".