1128998 has 16 divisors (see below), whose sum is σ = 1841616. Its totient is φ = 516000.

The previous prime is 1128997. The next prime is 1129013. The reversal of 1128998 is 8998211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128997) 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, 4373 + ... + 4623.

It is an arithmetic number, because the mean of its divisors is an integer number (115101).

2^1128998 is an apocalyptic number.

1128998 is a deficient number, since it is larger than the sum of its proper divisors (712618).

1128998 is a wasteful number, since it uses less digits than its factorization.

1128998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439.

The product of its digits is 10368, while the sum is 38.

The square root of 1128998 is about 1062.5431755933. The cubic root of 1128998 is about 104.1272480896.

The spelling of 1128998 in words is "one million, one hundred twenty-eight thousand, nine hundred ninety-eight".