1128273 has 8 divisors (see below), whose sum is σ = 1592928. Its totient is φ = 707904.

The previous prime is 1128251. The next prime is 1128287. The reversal of 1128273 is 3728211.

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

It is not a de Polignac number, because 1128273 - 2⁶ = 1128209 is a prime.

It is an Ulam number.

1128273 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1128223) 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, 11011 + ... + 11112.

It is an arithmetic number, because the mean of its divisors is an integer number (199116).

2^1128273 is an apocalyptic number.

It is an amenable number.

1128273 is a deficient number, since it is larger than the sum of its proper divisors (464655).

1128273 is a wasteful number, since it uses less digits than its factorization.

1128273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22143.

The product of its digits is 672, while the sum is 24.

The square root of 1128273 is about 1062.2019581982. The cubic root of 1128273 is about 104.1049544510.

It can be divided in two parts, 112 and 8273, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 1128273 in words is "one million, one hundred twenty-eight thousand, two hundred seventy-three".