1128275 has 6 divisors (see below), whose sum is σ = 1399092. Its totient is φ = 902600.

The previous prime is 1128251. The next prime is 1128287. The reversal of 1128275 is 5728211.

It is not a de Polignac number, because 1128275 - 2²⁰ = 79699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22541 + ... + 22590.

It is an arithmetic number, because the mean of its divisors is an integer number (233182).

2^1128275 is an apocalyptic number.

1128275 is a deficient number, since it is larger than the sum of its proper divisors (270817).

1128275 is an equidigital number, since it uses as much as digits as its factorization.

1128275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45141 (or 45136 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 1128275 is about 1062.2028996383. The cubic root of 1128275 is about 104.1050159639.

The spelling of 1128275 in words is "one million, one hundred twenty-eight thousand, two hundred seventy-five".