1128993 has 8 divisors (see below), whose sum is σ = 1512000. Its totient is φ = 749328.

The previous prime is 1128979. The next prime is 1128997. The reversal of 1128993 is 3998211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128993 - 2⁴ = 1128977 is a prime.

It is a Curzon 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, 108 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

2^1128993 is an apocalyptic number.

It is an amenable number.

1128993 is a deficient number, since it is larger than the sum of its proper divisors (383007).

1128993 is a wasteful number, since it uses less digits than its factorization.

1128993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671.

The product of its digits is 3888, while the sum is 33.

The square root of 1128993 is about 1062.5408227452. The cubic root of 1128993 is about 104.1270943731.

The spelling of 1128993 in words is "one million, one hundred twenty-eight thousand, nine hundred ninety-three".